1999746680

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{318431}}^1$

素因数の和:318599

約数の個数: 32

約数和(自身を含む): 4528103040

約数和(自身を除く): 2528356360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 318431, 636862, 1273724, 1592155, 2547448, 3184310, 6368620, 12737240, 49993667, 99987334, 199974668, 249968335, 399949336, 499936670, 999873340, 1999746680]

約数ペア:

[(1, 1999746680), (2, 999873340), (4, 499936670), (5, 399949336), (8, 249968335), (10, 199974668), (20, 99987334), (40, 49993667), (157, 12737240), (314, 6368620), (628, 3184310), (785, 2547448), (1256, 1592155), (1570, 1273724), (3140, 636862), (6280, 318431)]