21259255

素因数分解:

$5^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 26002944

約数和(自身を除く): 4743689

約数列:

[1, 5, 113, 191, 197, 565, 955, 985, 21583, 22261, 37627, 107915, 111305, 188135, 4251851, 21259255]

約数ペア:

[(1, 21259255), (5, 4251851), (113, 188135), (191, 111305), (197, 107915), (565, 37627), (955, 22261), (985, 21583)]