81445980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1$

素因数の和:125

約数の個数: 288

約数和(自身を含む): 306980352

約数和(自身を除く): 225534372

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 17, 20, 21, 22, 28, 30, 33, 34, 35, 42, 44, 51, 55, 60, 61, 66, 68, 70, 77, 84, 85, 102, 105, 110, 119, 122, 132, 140, 154, 165, 170, 183, 187, 204, 210, 220, 231, 238, 244, 255, 289, 305, 308, 330, 340, 357, 366, 374, 385, 420, 427, 462, 476, 510, 561, 578, 595, 610, 660, 671, 714, 732, 748, 770, 854, 867, 915, 924, 935, 1020, 1037, 1122, 1155, 1156, 1190, 1220, 1281, 1309, 1342, 1428, 1445, 1540, 1708, 1734, 1785, 1830, 1870, 2013, 2023, 2074, 2135, 2244, 2310, 2380, 2562, 2618, 2684, 2805, 2890, 3111, 3179, 3355, 3468, 3570, 3660, 3740, 3927, 4026, 4046, 4148, 4270, 4335, 4620, 4697, 5124, 5185, 5236, 5610, 5780, 6069, 6222, 6358, 6405, 6545, 6710, 7140, 7259, 7854, 8052, 8092, 8540, 8670, 9394, 9537, 10065, 10115, 10370, 11220, 11407, 12138, 12444, 12716, 12810, 13090, 13420, 14091, 14518, 15555, 15708, 15895, 17340, 17629, 18788, 19074, 19635, 20130, 20230, 20740, 21777, 22253, 22814, 23485, 24276, 25620, 26180, 28182, 29036, 30345, 31110, 31790, 34221, 35258, 36295, 38148, 39270, 40260, 40460, 43554, 44506, 45628, 46970, 47685, 52887, 56364, 57035, 60690, 62220, 63580, 66759, 68442, 70455, 70516, 72590, 78540, 79849, 87108, 88145, 89012, 93940, 95370, 105774, 108885, 111265, 114070, 121380, 123403, 133518, 136884, 140910, 145180, 159698, 171105, 176290, 190740, 193919, 211548, 217770, 222530, 228140, 239547, 246806, 264435, 267036, 281820, 319396, 333795, 342210, 352580, 370209, 387838, 399245, 435540, 445060, 479094, 493612, 528870, 581757, 617015, 667590, 684420, 740418, 775676, 798490, 958188, 969595, 1057740, 1163514, 1197735, 1234030, 1335180, 1357433, 1480836, 1596980, 1851045, 1939190, 2327028, 2395470, 2468060, 2714866, 2908785, 3702090, 3878380, 4072299, 4790940, 5429732, 5817570, 6787165, 7404180, 8144598, 11635140, 13574330, 16289196, 20361495, 27148660, 40722990, 81445980]

約数ペア:

[(1, 81445980), (2, 40722990), (3, 27148660), (4, 20361495), (5, 16289196), (6, 13574330), (7, 11635140), (10, 8144598), (11, 7404180), (12, 6787165), (14, 5817570), (15, 5429732), (17, 4790940), (20, 4072299), (21, 3878380), (22, 3702090), (28, 2908785), (30, 2714866), (33, 2468060), (34, 2395470), (35, 2327028), (42, 1939190), (44, 1851045), (51, 1596980), (55, 1480836), (60, 1357433), (61, 1335180), (66, 1234030), (68, 1197735), (70, 1163514), (77, 1057740), (84, 969595), (85, 958188), (102, 798490), (105, 775676), (110, 740418), (119, 684420), (122, 667590), (132, 617015), (140, 581757), (154, 528870), (165, 493612), (170, 479094), (183, 445060), (187, 435540), (204, 399245), (210, 387838), (220, 370209), (231, 352580), (238, 342210), (244, 333795), (255, 319396), (289, 281820), (305, 267036), (308, 264435), (330, 246806), (340, 239547), (357, 228140), (366, 222530), (374, 217770), (385, 211548), (420, 193919), (427, 190740), (462, 176290), (476, 171105), (510, 159698), (561, 145180), (578, 140910), (595, 136884), (610, 133518), (660, 123403), (671, 121380), (714, 114070), (732, 111265), (748, 108885), (770, 105774), (854, 95370), (867, 93940), (915, 89012), (924, 88145), (935, 87108), (1020, 79849), (1037, 78540), (1122, 72590), (1155, 70516), (1156, 70455), (1190, 68442), (1220, 66759), (1281, 63580), (1309, 62220), (1342, 60690), (1428, 57035), (1445, 56364), (1540, 52887), (1708, 47685), (1734, 46970), (1785, 45628), (1830, 44506), (1870, 43554), (2013, 40460), (2023, 40260), (2074, 39270), (2135, 38148), (2244, 36295), (2310, 35258), (2380, 34221), (2562, 31790), (2618, 31110), (2684, 30345), (2805, 29036), (2890, 28182), (3111, 26180), (3179, 25620), (3355, 24276), (3468, 23485), (3570, 22814), (3660, 22253), (3740, 21777), (3927, 20740), (4026, 20230), (4046, 20130), (4148, 19635), (4270, 19074), (4335, 18788), (4620, 17629), (4697, 17340), (5124, 15895), (5185, 15708), (5236, 15555), (5610, 14518), (5780, 14091), (6069, 13420), (6222, 13090), (6358, 12810), (6405, 12716), (6545, 12444), (6710, 12138), (7140, 11407), (7259, 11220), (7854, 10370), (8052, 10115), (8092, 10065), (8540, 9537), (8670, 9394)]