21665264

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1$

素因数の和:665

約数の個数: 40

約数和(自身を含む): 44273952

約数和(自身を除く): 22608688

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 113, 184, 226, 368, 452, 521, 904, 1042, 1808, 2084, 2599, 4168, 5198, 8336, 10396, 11983, 20792, 23966, 41584, 47932, 58873, 95864, 117746, 191728, 235492, 470984, 941968, 1354079, 2708158, 5416316, 10832632, 21665264]

約数ペア:

[(1, 21665264), (2, 10832632), (4, 5416316), (8, 2708158), (16, 1354079), (23, 941968), (46, 470984), (92, 235492), (113, 191728), (184, 117746), (226, 95864), (368, 58873), (452, 47932), (521, 41584), (904, 23966), (1042, 20792), (1808, 11983), (2084, 10396), (2599, 8336), (4168, 5198)]