21351345

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{3943}}^1$

素因数の和:3989

約数の個数: 24

約数和(自身を含む): 36063936

約数和(自身を除く): 14712591

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 361, 1083, 1805, 3943, 5415, 11829, 19715, 59145, 74917, 224751, 374585, 1123755, 1423423, 4270269, 7117115, 21351345]

約数ペア:

[(1, 21351345), (3, 7117115), (5, 4270269), (15, 1423423), (19, 1123755), (57, 374585), (95, 224751), (285, 74917), (361, 59145), (1083, 19715), (1805, 11829), (3943, 5415)]