21946516

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 39200000

約数和(自身を除く): 17253484

約数列:

[1, 2, 4, 79, 158, 199, 316, 349, 398, 698, 796, 1396, 15721, 27571, 31442, 55142, 62884, 69451, 110284, 138902, 277804, 5486629, 10973258, 21946516]

約数ペア:

[(1, 21946516), (2, 10973258), (4, 5486629), (79, 277804), (158, 138902), (199, 110284), (316, 69451), (349, 62884), (398, 55142), (698, 31442), (796, 27571), (1396, 15721)]