20558661

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1\times {\mathrm{821}}^1$

素因数の和:1332

約数の個数: 16

約数和(自身を含む): 29118528

約数和(自身を除く): 8559867

約数列:

[1, 3, 17, 51, 491, 821, 1473, 2463, 8347, 13957, 25041, 41871, 403111, 1209333, 6852887, 20558661]

約数ペア:

[(1, 20558661), (3, 6852887), (17, 1209333), (51, 403111), (491, 41871), (821, 25041), (1473, 13957), (2463, 8347)]