81708560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{701}}^1$

素因数の和:792

約数の個数: 80

約数和(自身を含む): 200558592

約数和(自身を除く): 118850032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 47, 62, 80, 94, 124, 155, 188, 235, 248, 310, 376, 470, 496, 620, 701, 752, 940, 1240, 1402, 1457, 1880, 2480, 2804, 2914, 3505, 3760, 5608, 5828, 7010, 7285, 11216, 11656, 14020, 14570, 21731, 23312, 28040, 29140, 32947, 43462, 56080, 58280, 65894, 86924, 108655, 116560, 131788, 164735, 173848, 217310, 263576, 329470, 347696, 434620, 527152, 658940, 869240, 1021357, 1317880, 1738480, 2042714, 2635760, 4085428, 5106785, 8170856, 10213570, 16341712, 20427140, 40854280, 81708560]

約数ペア:

[(1, 81708560), (2, 40854280), (4, 20427140), (5, 16341712), (8, 10213570), (10, 8170856), (16, 5106785), (20, 4085428), (31, 2635760), (40, 2042714), (47, 1738480), (62, 1317880), (80, 1021357), (94, 869240), (124, 658940), (155, 527152), (188, 434620), (235, 347696), (248, 329470), (310, 263576), (376, 217310), (470, 173848), (496, 164735), (620, 131788), (701, 116560), (752, 108655), (940, 86924), (1240, 65894), (1402, 58280), (1457, 56080), (1880, 43462), (2480, 32947), (2804, 29140), (2914, 28040), (3505, 23312), (3760, 21731), (5608, 14570), (5828, 14020), (7010, 11656), (7285, 11216)]