21597415

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 30689280

約数和(自身を除く): 9091865

約数列:

[1, 5, 7, 35, 73, 79, 107, 365, 395, 511, 535, 553, 749, 2555, 2765, 3745, 5767, 7811, 8453, 28835, 39055, 40369, 42265, 54677, 59171, 201845, 273385, 295855, 617069, 3085345, 4319483, 21597415]

約数ペア:

[(1, 21597415), (5, 4319483), (7, 3085345), (35, 617069), (73, 295855), (79, 273385), (107, 201845), (365, 59171), (395, 54677), (511, 42265), (535, 40369), (553, 39055), (749, 28835), (2555, 8453), (2765, 7811), (3745, 5767)]