21255663

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49547}}^1$

素因数の和:49574

約数の個数: 16

約数和(自身を含む): 33296256

約数和(自身を除く): 12040593

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49547, 148641, 545017, 644111, 1635051, 1932333, 7085221, 21255663]

約数ペア:

[(1, 21255663), (3, 7085221), (11, 1932333), (13, 1635051), (33, 644111), (39, 545017), (143, 148641), (429, 49547)]