21553388

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{1063}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 39057312

約数和(自身を除く): 17503924

約数列:

[1, 2, 4, 37, 74, 137, 148, 274, 548, 1063, 2126, 4252, 5069, 10138, 20276, 39331, 78662, 145631, 157324, 291262, 582524, 5388347, 10776694, 21553388]

約数ペア:

[(1, 21553388), (2, 10776694), (4, 5388347), (37, 582524), (74, 291262), (137, 157324), (148, 145631), (274, 78662), (548, 39331), (1063, 20276), (2126, 10138), (4252, 5069)]