21386403

素因数分解:

$3^3\times {\mathrm{653}}^1\times {\mathrm{1213}}^1$

素因数の和:1875

約数の個数: 16

約数和(自身を含む): 31758240

約数和(自身を除く): 10371837

約数列:

[1, 3, 9, 27, 653, 1213, 1959, 3639, 5877, 10917, 17631, 32751, 792089, 2376267, 7128801, 21386403]

約数ペア:

[(1, 21386403), (3, 7128801), (9, 2376267), (27, 792089), (653, 32751), (1213, 17631), (1959, 10917), (3639, 5877)]