20187993

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{293}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 32852736

約数和(自身を除く): 12664743

約数列:

[1, 3, 7, 17, 21, 51, 119, 193, 293, 357, 579, 879, 1351, 2051, 3281, 4053, 4981, 6153, 9843, 14943, 22967, 34867, 56549, 68901, 104601, 169647, 395843, 961333, 1187529, 2883999, 6729331, 20187993]

約数ペア:

[(1, 20187993), (3, 6729331), (7, 2883999), (17, 1187529), (21, 961333), (51, 395843), (119, 169647), (193, 104601), (293, 68901), (357, 56549), (579, 34867), (879, 22967), (1351, 14943), (2051, 9843), (3281, 6153), (4053, 4981)]