21871629

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1427}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 34306272

約数和(自身を除く): 12434643

約数列:

[1, 3, 9, 13, 39, 117, 131, 393, 1179, 1427, 1703, 4281, 5109, 12843, 15327, 18551, 55653, 166959, 186937, 560811, 1682433, 2430181, 7290543, 21871629]

約数ペア:

[(1, 21871629), (3, 7290543), (9, 2430181), (13, 1682433), (39, 560811), (117, 186937), (131, 166959), (393, 55653), (1179, 18551), (1427, 15327), (1703, 12843), (4281, 5109)]