21064575

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40123}}^1$

素因数の和:40143

約数の個数: 24

約数和(自身を含む): 39803008

約数和(自身を除く): 18738433

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40123, 120369, 200615, 280861, 601845, 842583, 1003075, 1404305, 3009225, 4212915, 7021525, 21064575]

約数ペア:

[(1, 21064575), (3, 7021525), (5, 4212915), (7, 3009225), (15, 1404305), (21, 1003075), (25, 842583), (35, 601845), (75, 280861), (105, 200615), (175, 120369), (525, 40123)]