20518995

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27917}}^1$

素因数の和:27939

約数の個数: 24

約数和(自身を含む): 38191824

約数和(自身を除く): 17672829

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27917, 83751, 139585, 195419, 418755, 586257, 977095, 1367933, 2931285, 4103799, 6839665, 20518995]

約数ペア:

[(1, 20518995), (3, 6839665), (5, 4103799), (7, 2931285), (15, 1367933), (21, 977095), (35, 586257), (49, 418755), (105, 195419), (147, 139585), (245, 83751), (735, 27917)]