20026280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4957}}^1$

素因数の和:5069

約数の個数: 32

約数和(自身を含む): 45514440

約数和(自身を除く): 25488160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4957, 9914, 19828, 24785, 39656, 49570, 99140, 198280, 500657, 1001314, 2002628, 2503285, 4005256, 5006570, 10013140, 20026280]

約数ペア:

[(1, 20026280), (2, 10013140), (4, 5006570), (5, 4005256), (8, 2503285), (10, 2002628), (20, 1001314), (40, 500657), (101, 198280), (202, 99140), (404, 49570), (505, 39656), (808, 24785), (1010, 19828), (2020, 9914), (4040, 4957)]