21625071

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 33243840

約数和(自身を除く): 11618769

約数列:

[1, 3, 13, 17, 39, 51, 169, 193, 221, 507, 579, 663, 2197, 2509, 2873, 3281, 6591, 7527, 8619, 9843, 32617, 37349, 42653, 97851, 112047, 127959, 424021, 554489, 1272063, 1663467, 7208357, 21625071]

約数ペア:

[(1, 21625071), (3, 7208357), (13, 1663467), (17, 1272063), (39, 554489), (51, 424021), (169, 127959), (193, 112047), (221, 97851), (507, 42653), (579, 37349), (663, 32617), (2197, 9843), (2509, 8619), (2873, 7527), (3281, 6591)]