21878923

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{419}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 2796917

約数列:

[1, 11, 47, 101, 419, 517, 1111, 4609, 4747, 19693, 42319, 52217, 216623, 465509, 1988993, 21878923]

約数ペア:

[(1, 21878923), (11, 1988993), (47, 465509), (101, 216623), (419, 52217), (517, 42319), (1111, 19693), (4609, 4747)]