20438360

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5059}}^1$

素因数の和:5171

約数の個数: 32

約数和(自身を含む): 46450800

約数和(自身を除く): 26012440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5059, 10118, 20236, 25295, 40472, 50590, 101180, 202360, 510959, 1021918, 2043836, 2554795, 4087672, 5109590, 10219180, 20438360]

約数ペア:

[(1, 20438360), (2, 10219180), (4, 5109590), (5, 4087672), (8, 2554795), (10, 2043836), (20, 1021918), (40, 510959), (101, 202360), (202, 101180), (404, 50590), (505, 40472), (808, 25295), (1010, 20236), (2020, 10118), (4040, 5059)]