641080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:100

約数の個数: 64

約数和(自身を含む): 1658880

約数和(自身を除く): 1017800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 47, 55, 62, 88, 94, 110, 124, 155, 188, 220, 235, 248, 310, 341, 376, 440, 470, 517, 620, 682, 940, 1034, 1240, 1364, 1457, 1705, 1880, 2068, 2585, 2728, 2914, 3410, 4136, 5170, 5828, 6820, 7285, 10340, 11656, 13640, 14570, 16027, 20680, 29140, 32054, 58280, 64108, 80135, 128216, 160270, 320540, 641080]

約数ペア:

[(1, 641080), (2, 320540), (4, 160270), (5, 128216), (8, 80135), (10, 64108), (11, 58280), (20, 32054), (22, 29140), (31, 20680), (40, 16027), (44, 14570), (47, 13640), (55, 11656), (62, 10340), (88, 7285), (94, 6820), (110, 5828), (124, 5170), (155, 4136), (188, 3410), (220, 2914), (235, 2728), (248, 2585), (310, 2068), (341, 1880), (376, 1705), (440, 1457), (470, 1364), (517, 1240), (620, 1034), (682, 940)]