281920360

素因数分解:

$2^3\times 5^1\times {\mathrm{7048009}}^1$

素因数の和:7048020

約数の個数: 16

約数和(自身を含む): 634320900

約数和(自身を除く): 352400540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7048009, 14096018, 28192036, 35240045, 56384072, 70480090, 140960180, 281920360]

約数ペア:

[(1, 281920360), (2, 140960180), (4, 70480090), (5, 56384072), (8, 35240045), (10, 28192036), (20, 14096018), (40, 7048009)]