21376744

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65173}}^1$

素因数の和:65220

約数の個数: 16

約数和(自身を含む): 41059620

約数和(自身を除く): 19682876

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65173, 130346, 260692, 521384, 2672093, 5344186, 10688372, 21376744]

約数ペア:

[(1, 21376744), (2, 10688372), (4, 5344186), (8, 2672093), (41, 521384), (82, 260692), (164, 130346), (328, 65173)]