81354960

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{313}}^1$

素因数の和:370

約数の個数: 180

約数和(自身を含む): 289275012

約数和(自身を除く): 207920052

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 313, 342, 360, 361, 380, 456, 570, 626, 684, 720, 722, 760, 855, 912, 939, 1083, 1140, 1252, 1368, 1444, 1520, 1565, 1710, 1805, 1878, 2166, 2280, 2504, 2736, 2817, 2888, 3130, 3249, 3420, 3610, 3756, 4332, 4560, 4695, 5008, 5415, 5634, 5776, 5947, 6260, 6498, 6840, 7220, 7512, 8664, 9390, 10830, 11268, 11894, 12520, 12996, 13680, 14085, 14440, 15024, 16245, 17328, 17841, 18780, 21660, 22536, 23788, 25040, 25992, 28170, 28880, 29735, 32490, 35682, 37560, 43320, 45072, 47576, 51984, 53523, 56340, 59470, 64980, 71364, 75120, 86640, 89205, 95152, 107046, 112680, 112993, 118940, 129960, 142728, 178410, 214092, 225360, 225986, 237880, 259920, 267615, 285456, 338979, 356820, 428184, 451972, 475760, 535230, 564965, 677958, 713640, 856368, 903944, 1016937, 1070460, 1129930, 1355916, 1427280, 1694895, 1807888, 2033874, 2140920, 2259860, 2711832, 3389790, 4067748, 4281840, 4519720, 5084685, 5423664, 6779580, 8135496, 9039440, 10169370, 13559160, 16270992, 20338740, 27118320, 40677480, 81354960]

約数ペア:

[(1, 81354960), (2, 40677480), (3, 27118320), (4, 20338740), (5, 16270992), (6, 13559160), (8, 10169370), (9, 9039440), (10, 8135496), (12, 6779580), (15, 5423664), (16, 5084685), (18, 4519720), (19, 4281840), (20, 4067748), (24, 3389790), (30, 2711832), (36, 2259860), (38, 2140920), (40, 2033874), (45, 1807888), (48, 1694895), (57, 1427280), (60, 1355916), (72, 1129930), (76, 1070460), (80, 1016937), (90, 903944), (95, 856368), (114, 713640), (120, 677958), (144, 564965), (152, 535230), (171, 475760), (180, 451972), (190, 428184), (228, 356820), (240, 338979), (285, 285456), (304, 267615), (313, 259920), (342, 237880), (360, 225986), (361, 225360), (380, 214092), (456, 178410), (570, 142728), (626, 129960), (684, 118940), (720, 112993), (722, 112680), (760, 107046), (855, 95152), (912, 89205), (939, 86640), (1083, 75120), (1140, 71364), (1252, 64980), (1368, 59470), (1444, 56340), (1520, 53523), (1565, 51984), (1710, 47576), (1805, 45072), (1878, 43320), (2166, 37560), (2280, 35682), (2504, 32490), (2736, 29735), (2817, 28880), (2888, 28170), (3130, 25992), (3249, 25040), (3420, 23788), (3610, 22536), (3756, 21660), (4332, 18780), (4560, 17841), (4695, 17328), (5008, 16245), (5415, 15024), (5634, 14440), (5776, 14085), (5947, 13680), (6260, 12996), (6498, 12520), (6840, 11894), (7220, 11268), (7512, 10830), (8664, 9390)]