18256760

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4519}}^1$

素因数の和:4631

約数の個数: 32

約数和(自身を含む): 41493600

約数和(自身を除く): 23236840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4519, 9038, 18076, 22595, 36152, 45190, 90380, 180760, 456419, 912838, 1825676, 2282095, 3651352, 4564190, 9128380, 18256760]

約数ペア:

[(1, 18256760), (2, 9128380), (4, 4564190), (5, 3651352), (8, 2282095), (10, 1825676), (20, 912838), (40, 456419), (101, 180760), (202, 90380), (404, 45190), (505, 36152), (808, 22595), (1010, 18076), (2020, 9038), (4040, 4519)]