21870303

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{80111}}^1$

素因数の和:80134

約数の個数: 16

約数和(自身を含む): 35890176

約数和(自身を除く): 14019873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 80111, 240333, 560777, 1041443, 1682331, 3124329, 7290101, 21870303]

約数ペア:

[(1, 21870303), (3, 7290101), (7, 3124329), (13, 1682331), (21, 1041443), (39, 560777), (91, 240333), (273, 80111)]