21309873

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13327}}^1$

素因数の和:13384

約数の個数: 16

約数和(自身を含む): 31347456

約数和(自身を除く): 10037583

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13327, 39981, 173251, 519753, 546407, 1639221, 7103291, 21309873]

約数ペア:

[(1, 21309873), (3, 7103291), (13, 1639221), (39, 546407), (41, 519753), (123, 173251), (533, 39981), (1599, 13327)]