20408829

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13313}}^1$

素因数の和:13396

約数の個数: 16

約数和(自身を含む): 31527552

約数和(自身を除く): 11118723

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13313, 39939, 93191, 279573, 971849, 2915547, 6802943, 20408829]

約数ペア:

[(1, 20408829), (3, 6802943), (7, 2915547), (21, 971849), (73, 279573), (219, 93191), (511, 39939), (1533, 13313)]