280864240

素因数分解:

$2^4\times 5^1\times {\mathrm{3510803}}^1$

素因数の和:3510816

約数の個数: 20

約数和(自身を含む): 653009544

約数和(自身を除く): 372145304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3510803, 7021606, 14043212, 17554015, 28086424, 35108030, 56172848, 70216060, 140432120, 280864240]

約数ペア:

[(1, 280864240), (2, 140432120), (4, 70216060), (5, 56172848), (8, 35108030), (10, 28086424), (16, 17554015), (20, 14043212), (40, 7021606), (80, 3510803)]