81296360

素因数分解:

$2^3\times 5^1\times {\mathrm{2032409}}^1$

素因数の和:2032420

約数の個数: 16

約数和(自身を含む): 182916900

約数和(自身を除く): 101620540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2032409, 4064818, 8129636, 10162045, 16259272, 20324090, 40648180, 81296360]

約数ペア:

[(1, 81296360), (2, 40648180), (4, 20324090), (5, 16259272), (8, 10162045), (10, 8129636), (20, 4064818), (40, 2032409)]