20987360

素因数分解:

$2^5\times 5^1\times {\mathrm{131171}}^1$

素因数の和:131186

約数の個数: 24

約数和(自身を含む): 49583016

約数和(自身を除く): 28595656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131171, 262342, 524684, 655855, 1049368, 1311710, 2098736, 2623420, 4197472, 5246840, 10493680, 20987360]

約数ペア:

[(1, 20987360), (2, 10493680), (4, 5246840), (5, 4197472), (8, 2623420), (10, 2098736), (16, 1311710), (20, 1049368), (32, 655855), (40, 524684), (80, 262342), (160, 131171)]