789340

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 1687392

約数和(自身を除く): 898052

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 647, 1220, 1294, 2588, 3235, 6470, 12940, 39467, 78934, 157868, 197335, 394670, 789340]

約数ペア:

[(1, 789340), (2, 394670), (4, 197335), (5, 157868), (10, 78934), (20, 39467), (61, 12940), (122, 6470), (244, 3235), (305, 2588), (610, 1294), (647, 1220)]