631420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:381

約数の個数: 24

約数和(自身を含む): 1341648

約数和(自身を除く): 710228

約数列:

[1, 2, 4, 5, 10, 20, 131, 241, 262, 482, 524, 655, 964, 1205, 1310, 2410, 2620, 4820, 31571, 63142, 126284, 157855, 315710, 631420]

約数ペア:

[(1, 631420), (2, 315710), (4, 157855), (5, 126284), (10, 63142), (20, 31571), (131, 4820), (241, 2620), (262, 2410), (482, 1310), (524, 1205), (655, 964)]