21888044

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{787}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 40708080

約数和(自身を除く): 18820036

約数列:

[1, 2, 4, 17, 34, 68, 409, 787, 818, 1574, 1636, 3148, 6953, 13379, 13906, 26758, 27812, 53516, 321883, 643766, 1287532, 5472011, 10944022, 21888044]

約数ペア:

[(1, 21888044), (2, 10944022), (4, 5472011), (17, 1287532), (34, 643766), (68, 321883), (409, 53516), (787, 27812), (818, 26758), (1574, 13906), (1636, 13379), (3148, 6953)]