21001510

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{521}}^1$

素因数の和:696

約数の個数: 32

約数和(自身を含む): 39463200

約数和(自身を除く): 18461690

約数列:

[1, 2, 5, 10, 29, 58, 139, 145, 278, 290, 521, 695, 1042, 1390, 2605, 4031, 5210, 8062, 15109, 20155, 30218, 40310, 72419, 75545, 144838, 151090, 362095, 724190, 2100151, 4200302, 10500755, 21001510]

約数ペア:

[(1, 21001510), (2, 10500755), (5, 4200302), (10, 2100151), (29, 724190), (58, 362095), (139, 151090), (145, 144838), (278, 75545), (290, 72419), (521, 40310), (695, 30218), (1042, 20155), (1390, 15109), (2605, 8062), (4031, 5210)]