20587497

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3257}}^1$

素因数の和:3317

約数の個数: 24

約数和(自身を含む): 32684256

約数和(自身を除く): 12096759

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3257, 6321, 9771, 22799, 68397, 140051, 159593, 420153, 478779, 980357, 2941071, 6862499, 20587497]

約数ペア:

[(1, 20587497), (3, 6862499), (7, 2941071), (21, 980357), (43, 478779), (49, 420153), (129, 159593), (147, 140051), (301, 68397), (903, 22799), (2107, 9771), (3257, 6321)]