21664004

素因数分解:

$2^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 38572800

約数和(自身を除く): 16908796

約数列:

[1, 2, 4, 149, 163, 223, 298, 326, 446, 596, 652, 892, 24287, 33227, 36349, 48574, 66454, 72698, 97148, 132908, 145396, 5416001, 10832002, 21664004]

約数ペア:

[(1, 21664004), (2, 10832002), (4, 5416001), (149, 145396), (163, 132908), (223, 97148), (298, 72698), (326, 66454), (446, 48574), (596, 36349), (652, 33227), (892, 24287)]