180415280

素因数分解:

$2^4\times 5^1\times {\mathrm{2255191}}^1$

素因数の和:2255204

約数の個数: 20

約数和(自身を含む): 419465712

約数和(自身を除く): 239050432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2255191, 4510382, 9020764, 11275955, 18041528, 22551910, 36083056, 45103820, 90207640, 180415280]

約数ペア:

[(1, 180415280), (2, 90207640), (4, 45103820), (5, 36083056), (8, 22551910), (10, 18041528), (16, 11275955), (20, 9020764), (40, 4510382), (80, 2255191)]