20513661

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31511}}^1$

素因数の和:31552

約数の個数: 16

約数和(自身を含む): 32268288

約数和(自身を除く): 11754627

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31511, 94533, 220577, 661731, 976841, 2930523, 6837887, 20513661]

約数ペア:

[(1, 20513661), (3, 6837887), (7, 2930523), (21, 976841), (31, 661731), (93, 220577), (217, 94533), (651, 31511)]