21403304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1571}}^1$

素因数の和:1721

約数の個数: 32

約数和(自身を含む): 43575840

約数和(自身を除く): 22172536

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 131, 262, 524, 1048, 1571, 1703, 3142, 3406, 6284, 6812, 12568, 13624, 20423, 40846, 81692, 163384, 205801, 411602, 823204, 1646408, 2675413, 5350826, 10701652, 21403304]

約数ペア:

[(1, 21403304), (2, 10701652), (4, 5350826), (8, 2675413), (13, 1646408), (26, 823204), (52, 411602), (104, 205801), (131, 163384), (262, 81692), (524, 40846), (1048, 20423), (1571, 13624), (1703, 12568), (3142, 6812), (3406, 6284)]