20218456

素因数分解:

$2^3\times {\mathrm{67}}^2\times {\mathrm{563}}^1$

素因数の和:703

約数の個数: 24

約数和(自身を含む): 38552220

約数和(自身を除く): 18333764

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 563, 1126, 2252, 4489, 4504, 8978, 17956, 35912, 37721, 75442, 150884, 301768, 2527307, 5054614, 10109228, 20218456]

約数ペア:

[(1, 20218456), (2, 10109228), (4, 5054614), (8, 2527307), (67, 301768), (134, 150884), (268, 75442), (536, 37721), (563, 35912), (1126, 17956), (2252, 8978), (4489, 4504)]