21303308

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{821}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 40278000

約数和(自身を除く): 18974692

約数列:

[1, 2, 4, 13, 26, 52, 499, 821, 998, 1642, 1996, 3284, 6487, 10673, 12974, 21346, 25948, 42692, 409679, 819358, 1638716, 5325827, 10651654, 21303308]

約数ペア:

[(1, 21303308), (2, 10651654), (4, 5325827), (13, 1638716), (26, 819358), (52, 409679), (499, 42692), (821, 25948), (998, 21346), (1642, 12974), (1996, 10673), (3284, 6487)]