18617929

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 21528000

約数和(自身を除く): 2910071

約数列:

[1, 11, 19, 209, 229, 389, 2519, 4279, 4351, 7391, 47861, 81301, 89081, 979891, 1692539, 18617929]

約数ペア:

[(1, 18617929), (11, 1692539), (19, 979891), (209, 89081), (229, 81301), (389, 47861), (2519, 7391), (4279, 4351)]