18918196

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4831}}^1$

素因数の和:4935

約数の個数: 24

約数和(自身を含む): 36529920

約数和(自身を除く): 17611724

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 4831, 9662, 19324, 53141, 106282, 212564, 429959, 859918, 1719836, 4729549, 9459098, 18918196]

約数ペア:

[(1, 18918196), (2, 9459098), (4, 4729549), (11, 1719836), (22, 859918), (44, 429959), (89, 212564), (178, 106282), (356, 53141), (979, 19324), (1958, 9662), (3916, 4831)]