20249991

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1499}}^1$

素因数の和:1603

約数の個数: 24

約数和(自身を含む): 31200000

約数和(自身を除く): 10950009

約数列:

[1, 3, 9, 19, 57, 79, 171, 237, 711, 1499, 1501, 4497, 4503, 13491, 13509, 28481, 85443, 118421, 256329, 355263, 1065789, 2249999, 6749997, 20249991]

約数ペア:

[(1, 20249991), (3, 6749997), (9, 2249999), (19, 1065789), (57, 355263), (79, 256329), (171, 118421), (237, 85443), (711, 28481), (1499, 13509), (1501, 13491), (4497, 4503)]