81291960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:430

約数の個数: 192

約数和(自身を含む): 288100800

約数和(自身を除く): 206808840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 37, 40, 45, 51, 60, 68, 72, 74, 85, 90, 102, 111, 120, 136, 148, 153, 170, 180, 185, 204, 222, 255, 296, 306, 333, 340, 359, 360, 370, 408, 444, 510, 555, 612, 629, 666, 680, 718, 740, 765, 888, 1020, 1077, 1110, 1224, 1258, 1332, 1436, 1480, 1530, 1665, 1795, 1887, 2040, 2154, 2220, 2516, 2664, 2872, 3060, 3145, 3231, 3330, 3590, 3774, 4308, 4440, 5032, 5385, 5661, 6103, 6120, 6290, 6462, 6660, 7180, 7548, 8616, 9435, 10770, 11322, 12206, 12580, 12924, 13283, 13320, 14360, 15096, 16155, 18309, 18870, 21540, 22644, 24412, 25160, 25848, 26566, 28305, 30515, 32310, 36618, 37740, 39849, 43080, 45288, 48824, 53132, 54927, 56610, 61030, 64620, 66415, 73236, 75480, 79698, 91545, 106264, 109854, 113220, 119547, 122060, 129240, 132830, 146472, 159396, 183090, 199245, 219708, 225811, 226440, 239094, 244120, 265660, 274635, 318792, 366180, 398490, 439416, 451622, 478188, 531320, 549270, 597735, 677433, 732360, 796980, 903244, 956376, 1098540, 1129055, 1195470, 1354866, 1593960, 1806488, 2032299, 2197080, 2258110, 2390940, 2709732, 3387165, 4064598, 4516220, 4781880, 5419464, 6774330, 8129196, 9032440, 10161495, 13548660, 16258392, 20322990, 27097320, 40645980, 81291960]

約数ペア:

[(1, 81291960), (2, 40645980), (3, 27097320), (4, 20322990), (5, 16258392), (6, 13548660), (8, 10161495), (9, 9032440), (10, 8129196), (12, 6774330), (15, 5419464), (17, 4781880), (18, 4516220), (20, 4064598), (24, 3387165), (30, 2709732), (34, 2390940), (36, 2258110), (37, 2197080), (40, 2032299), (45, 1806488), (51, 1593960), (60, 1354866), (68, 1195470), (72, 1129055), (74, 1098540), (85, 956376), (90, 903244), (102, 796980), (111, 732360), (120, 677433), (136, 597735), (148, 549270), (153, 531320), (170, 478188), (180, 451622), (185, 439416), (204, 398490), (222, 366180), (255, 318792), (296, 274635), (306, 265660), (333, 244120), (340, 239094), (359, 226440), (360, 225811), (370, 219708), (408, 199245), (444, 183090), (510, 159396), (555, 146472), (612, 132830), (629, 129240), (666, 122060), (680, 119547), (718, 113220), (740, 109854), (765, 106264), (888, 91545), (1020, 79698), (1077, 75480), (1110, 73236), (1224, 66415), (1258, 64620), (1332, 61030), (1436, 56610), (1480, 54927), (1530, 53132), (1665, 48824), (1795, 45288), (1887, 43080), (2040, 39849), (2154, 37740), (2220, 36618), (2516, 32310), (2664, 30515), (2872, 28305), (3060, 26566), (3145, 25848), (3231, 25160), (3330, 24412), (3590, 22644), (3774, 21540), (4308, 18870), (4440, 18309), (5032, 16155), (5385, 15096), (5661, 14360), (6103, 13320), (6120, 13283), (6290, 12924), (6462, 12580), (6660, 12206), (7180, 11322), (7548, 10770), (8616, 9435)]