21881847

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{4283}}^1$

素因数の和:4430

約数の個数: 16

約数和(自身を含む): 31667328

約数和(自身を除く): 9785481

約数列:

[1, 3, 13, 39, 131, 393, 1703, 4283, 5109, 12849, 55679, 167037, 561073, 1683219, 7293949, 21881847]

約数ペア:

[(1, 21881847), (3, 7293949), (13, 1683219), (39, 561073), (131, 167037), (393, 55679), (1703, 12849), (4283, 5109)]