21144903

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6863}}^1$

素因数の和:6958

約数の個数: 16

約数和(自身を含む): 30750720

約数和(自身を除く): 9605817

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6863, 20589, 89219, 267657, 542177, 1626531, 7048301, 21144903]

約数ペア:

[(1, 21144903), (3, 7048301), (13, 1626531), (39, 542177), (79, 267657), (237, 89219), (1027, 20589), (3081, 6863)]