31306640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4397}}^1$

素因数の和:4499

約数の個数: 40

約数和(自身を含む): 73622520

約数和(自身を除く): 42315880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4397, 7120, 8794, 17588, 21985, 35176, 43970, 70352, 87940, 175880, 351760, 391333, 782666, 1565332, 1956665, 3130664, 3913330, 6261328, 7826660, 15653320, 31306640]

約数ペア:

[(1, 31306640), (2, 15653320), (4, 7826660), (5, 6261328), (8, 3913330), (10, 3130664), (16, 1956665), (20, 1565332), (40, 782666), (80, 391333), (89, 351760), (178, 175880), (356, 87940), (445, 70352), (712, 43970), (890, 35176), (1424, 21985), (1780, 17588), (3560, 8794), (4397, 7120)]