20657223

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 30640896

約数和(自身を除く): 9983673

約数列:

[1, 3, 9, 61, 183, 191, 197, 549, 573, 591, 1719, 1773, 11651, 12017, 34953, 36051, 37627, 104859, 108153, 112881, 338643, 2295247, 6885741, 20657223]

約数ペア:

[(1, 20657223), (3, 6885741), (9, 2295247), (61, 338643), (183, 112881), (191, 108153), (197, 104859), (549, 37627), (573, 36051), (591, 34953), (1719, 12017), (1773, 11651)]