81304360

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{733}}^1$

素因数の和:850

約数の個数: 64

約数和(自身を含む): 190252800

約数和(自身を除く): 108948440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 59, 94, 118, 188, 235, 236, 295, 376, 470, 472, 590, 733, 940, 1180, 1466, 1880, 2360, 2773, 2932, 3665, 5546, 5864, 7330, 11092, 13865, 14660, 22184, 27730, 29320, 34451, 43247, 55460, 68902, 86494, 110920, 137804, 172255, 172988, 216235, 275608, 344510, 345976, 432470, 689020, 864940, 1378040, 1729880, 2032609, 4065218, 8130436, 10163045, 16260872, 20326090, 40652180, 81304360]

約数ペア:

[(1, 81304360), (2, 40652180), (4, 20326090), (5, 16260872), (8, 10163045), (10, 8130436), (20, 4065218), (40, 2032609), (47, 1729880), (59, 1378040), (94, 864940), (118, 689020), (188, 432470), (235, 345976), (236, 344510), (295, 275608), (376, 216235), (470, 172988), (472, 172255), (590, 137804), (733, 110920), (940, 86494), (1180, 68902), (1466, 55460), (1880, 43247), (2360, 34451), (2773, 29320), (2932, 27730), (3665, 22184), (5546, 14660), (5864, 13865), (7330, 11092)]