18199820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31379}}^1$

素因数の和:31417

約数の個数: 24

約数和(自身を含む): 39538800

約数和(自身を除く): 21338980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 31379, 62758, 125516, 156895, 313790, 627580, 909991, 1819982, 3639964, 4549955, 9099910, 18199820]

約数ペア:

[(1, 18199820), (2, 9099910), (4, 4549955), (5, 3639964), (10, 1819982), (20, 909991), (29, 627580), (58, 313790), (116, 156895), (145, 125516), (290, 62758), (580, 31379)]