21872516

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{677}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 39467736

約数和(自身を除く): 17595220

約数列:

[1, 2, 4, 41, 82, 164, 197, 394, 677, 788, 1354, 2708, 8077, 16154, 27757, 32308, 55514, 111028, 133369, 266738, 533476, 5468129, 10936258, 21872516]

約数ペア:

[(1, 21872516), (2, 10936258), (4, 5468129), (41, 533476), (82, 266738), (164, 133369), (197, 111028), (394, 55514), (677, 32308), (788, 27757), (1354, 16154), (2708, 8077)]