40144820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1663}}^1$

素因数の和:1760

約数の個数: 48

約数和(自身を含む): 90574848

約数和(自身を除く): 50430028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 1207, 1420, 1663, 2414, 3326, 4828, 6035, 6652, 8315, 12070, 16630, 24140, 28271, 33260, 56542, 113084, 118073, 141355, 236146, 282710, 472292, 565420, 590365, 1180730, 2007241, 2361460, 4014482, 8028964, 10036205, 20072410, 40144820]

約数ペア:

[(1, 40144820), (2, 20072410), (4, 10036205), (5, 8028964), (10, 4014482), (17, 2361460), (20, 2007241), (34, 1180730), (68, 590365), (71, 565420), (85, 472292), (142, 282710), (170, 236146), (284, 141355), (340, 118073), (355, 113084), (710, 56542), (1207, 33260), (1420, 28271), (1663, 24140), (2414, 16630), (3326, 12070), (4828, 8315), (6035, 6652)]