20791911

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16231}}^1$

素因数の和:16302

約数の個数: 16

約数和(自身を含む): 32204288

約数和(自身を除く): 11412377

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16231, 48693, 113617, 340851, 990091, 2970273, 6930637, 20791911]

約数ペア:

[(1, 20791911), (3, 6930637), (7, 2970273), (21, 990091), (61, 340851), (183, 113617), (427, 48693), (1281, 16231)]