21213699

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4283}}^1$

素因数の和:4426

約数の個数: 16

約数和(自身を含む): 30707712

約数和(自身を除く): 9494013

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4283, 4953, 12849, 55679, 167037, 543941, 1631823, 7071233, 21213699]

約数ペア:

[(1, 21213699), (3, 7071233), (13, 1631823), (39, 543941), (127, 167037), (381, 55679), (1651, 12849), (4283, 4953)]