21380643

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1289}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 32869200

約数和(自身を除く): 11488557

約数列:

[1, 3, 9, 19, 57, 97, 171, 291, 873, 1289, 1843, 3867, 5529, 11601, 16587, 24491, 73473, 125033, 220419, 375099, 1125297, 2375627, 7126881, 21380643]

約数ペア:

[(1, 21380643), (3, 7126881), (9, 2375627), (19, 1125297), (57, 375099), (97, 220419), (171, 125033), (291, 73473), (873, 24491), (1289, 16587), (1843, 11601), (3867, 5529)]