21750220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35081}}^1$

素因数の和:35121

約数の個数: 24

約数和(自身を含む): 47150208

約数和(自身を除く): 25399988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35081, 70162, 140324, 175405, 350810, 701620, 1087511, 2175022, 4350044, 5437555, 10875110, 21750220]

約数ペア:

[(1, 21750220), (2, 10875110), (4, 5437555), (5, 4350044), (10, 2175022), (20, 1087511), (31, 701620), (62, 350810), (124, 175405), (155, 140324), (310, 70162), (620, 35081)]