21529710

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1721}}^1$

素因数の和:1873

約数の個数: 48

約数和(自身を含む): 56412720

約数和(自身を除く): 34883010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 278, 417, 695, 834, 1251, 1390, 1721, 2085, 2502, 3442, 4170, 5163, 6255, 8605, 10326, 12510, 15489, 17210, 25815, 30978, 51630, 77445, 154890, 239219, 478438, 717657, 1196095, 1435314, 2152971, 2392190, 3588285, 4305942, 7176570, 10764855, 21529710]

約数ペア:

[(1, 21529710), (2, 10764855), (3, 7176570), (5, 4305942), (6, 3588285), (9, 2392190), (10, 2152971), (15, 1435314), (18, 1196095), (30, 717657), (45, 478438), (90, 239219), (139, 154890), (278, 77445), (417, 51630), (695, 30978), (834, 25815), (1251, 17210), (1390, 15489), (1721, 12510), (2085, 10326), (2502, 8605), (3442, 6255), (4170, 5163)]