395620

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 842688

約数和(自身を除く): 447068

約数列:

[1, 2, 4, 5, 10, 20, 131, 151, 262, 302, 524, 604, 655, 755, 1310, 1510, 2620, 3020, 19781, 39562, 79124, 98905, 197810, 395620]

約数ペア:

[(1, 395620), (2, 197810), (4, 98905), (5, 79124), (10, 39562), (20, 19781), (131, 3020), (151, 2620), (262, 1510), (302, 1310), (524, 755), (604, 655)]