18121420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{8971}}^1$

素因数の和:9081

約数の個数: 24

約数和(自身を含む): 38436048

約数和(自身を除く): 20314628

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 8971, 17942, 35884, 44855, 89710, 179420, 906071, 1812142, 3624284, 4530355, 9060710, 18121420]

約数ペア:

[(1, 18121420), (2, 9060710), (4, 4530355), (5, 3624284), (10, 1812142), (20, 906071), (101, 179420), (202, 89710), (404, 44855), (505, 35884), (1010, 17942), (2020, 8971)]