20974216

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 40392000

約数和(自身を除く): 19417784

約数列:

[1, 2, 4, 8, 67, 109, 134, 218, 268, 359, 436, 536, 718, 872, 1436, 2872, 7303, 14606, 24053, 29212, 39131, 48106, 58424, 78262, 96212, 156524, 192424, 313048, 2621777, 5243554, 10487108, 20974216]

約数ペア:

[(1, 20974216), (2, 10487108), (4, 5243554), (8, 2621777), (67, 313048), (109, 192424), (134, 156524), (218, 96212), (268, 78262), (359, 58424), (436, 48106), (536, 39131), (718, 29212), (872, 24053), (1436, 14606), (2872, 7303)]