21988473

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{3259}}^1$

素因数の和:3448

約数の個数: 16

約数和(自身を含む): 31765440

約数和(自身を除く): 9776967

約数列:

[1, 3, 13, 39, 173, 519, 2249, 3259, 6747, 9777, 42367, 127101, 563807, 1691421, 7329491, 21988473]

約数ペア:

[(1, 21988473), (3, 7329491), (13, 1691421), (39, 563807), (173, 127101), (519, 42367), (2249, 9777), (3259, 6747)]