218911760

素因数分解:

$2^4\times 5^1\times {\mathrm{2736397}}^1$

素因数の和:2736410

約数の個数: 20

約数和(自身を含む): 508970028

約数和(自身を除く): 290058268

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2736397, 5472794, 10945588, 13681985, 21891176, 27363970, 43782352, 54727940, 109455880, 218911760]

約数ペア:

[(1, 218911760), (2, 109455880), (4, 54727940), (5, 43782352), (8, 27363970), (10, 21891176), (16, 13681985), (20, 10945588), (40, 5472794), (80, 2736397)]