20571747

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{14621}}^1$

素因数の和:14698

約数の個数: 16

約数和(自身を含む): 31817472

約数和(自身を除く): 11245725

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 14621, 43863, 102347, 307041, 979607, 2938821, 6857249, 20571747]

約数ペア:

[(1, 20571747), (3, 6857249), (7, 2938821), (21, 979607), (67, 307041), (201, 102347), (469, 43863), (1407, 14621)]