168408880

素因数分解:

$2^4\times 5^1\times {\mathrm{2105111}}^1$

素因数の和:2105124

約数の個数: 20

約数和(自身を含む): 391550832

約数和(自身を除く): 223141952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2105111, 4210222, 8420444, 10525555, 16840888, 21051110, 33681776, 42102220, 84204440, 168408880]

約数ペア:

[(1, 168408880), (2, 84204440), (4, 42102220), (5, 33681776), (8, 21051110), (10, 16840888), (16, 10525555), (20, 8420444), (40, 4210222), (80, 2105111)]