21759493

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:588

約数の個数: 16

約数和(自身を含む): 25534080

約数和(自身を除く): 3774587

約数列:

[1, 7, 61, 131, 389, 427, 917, 2723, 7991, 23729, 50959, 55937, 166103, 356713, 3108499, 21759493]

約数ペア:

[(1, 21759493), (7, 3108499), (61, 356713), (131, 166103), (389, 55937), (427, 50959), (917, 23729), (2723, 7991)]