21328030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1151}}^1$

素因数の和:1284

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 19729250

約数列:

[1, 2, 5, 10, 17, 34, 85, 109, 170, 218, 545, 1090, 1151, 1853, 2302, 3706, 5755, 9265, 11510, 18530, 19567, 39134, 97835, 125459, 195670, 250918, 627295, 1254590, 2132803, 4265606, 10664015, 21328030]

約数ペア:

[(1, 21328030), (2, 10664015), (5, 4265606), (10, 2132803), (17, 1254590), (34, 627295), (85, 250918), (109, 195670), (170, 125459), (218, 97835), (545, 39134), (1090, 19567), (1151, 18530), (1853, 11510), (2302, 9265), (3706, 5755)]