21667383

素因数分解:

$3^2\times {\mathrm{61}}^2\times {\mathrm{647}}^1$

素因数の和:775

約数の個数: 18

約数和(自身を含む): 31867992

約数和(自身を除く): 10200609

約数列:

[1, 3, 9, 61, 183, 549, 647, 1941, 3721, 5823, 11163, 33489, 39467, 118401, 355203, 2407487, 7222461, 21667383]

約数ペア:

[(1, 21667383), (3, 7222461), (9, 2407487), (61, 355203), (183, 118401), (549, 39467), (647, 33489), (1941, 11163), (3721, 5823)]