31421000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2417}}^1$

素因数の和:2451

約数の個数: 64

約数和(自身を含む): 79213680

約数和(自身を除く): 47792680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 2417, 2600, 3250, 4834, 6500, 9668, 12085, 13000, 19336, 24170, 31421, 48340, 60425, 62842, 96680, 120850, 125684, 157105, 241700, 251368, 302125, 314210, 483400, 604250, 628420, 785525, 1208500, 1256840, 1571050, 2417000, 3142100, 3927625, 6284200, 7855250, 15710500, 31421000]

約数ペア:

[(1, 31421000), (2, 15710500), (4, 7855250), (5, 6284200), (8, 3927625), (10, 3142100), (13, 2417000), (20, 1571050), (25, 1256840), (26, 1208500), (40, 785525), (50, 628420), (52, 604250), (65, 483400), (100, 314210), (104, 302125), (125, 251368), (130, 241700), (200, 157105), (250, 125684), (260, 120850), (325, 96680), (500, 62842), (520, 60425), (650, 48340), (1000, 31421), (1300, 24170), (1625, 19336), (2417, 13000), (2600, 12085), (3250, 9668), (4834, 6500)]