20920790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4423}}^1$

素因数の和:4484

約数の個数: 32

約数和(自身を含む): 42045696

約数和(自身を除く): 21124906

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4423, 4730, 8846, 22115, 44230, 48653, 97306, 190189, 243265, 380378, 486530, 950945, 1901890, 2092079, 4184158, 10460395, 20920790]

約数ペア:

[(1, 20920790), (2, 10460395), (5, 4184158), (10, 2092079), (11, 1901890), (22, 950945), (43, 486530), (55, 380378), (86, 243265), (110, 190189), (215, 97306), (430, 48653), (473, 44230), (946, 22115), (2365, 8846), (4423, 4730)]