259901680

素因数分解:

$2^4\times 5^1\times {\mathrm{3248771}}^1$

素因数の和:3248784

約数の個数: 20

約数和(自身を含む): 604271592

約数和(自身を除く): 344369912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3248771, 6497542, 12995084, 16243855, 25990168, 32487710, 51980336, 64975420, 129950840, 259901680]

約数ペア:

[(1, 259901680), (2, 129950840), (4, 64975420), (5, 51980336), (8, 32487710), (10, 25990168), (16, 16243855), (20, 12995084), (40, 6497542), (80, 3248771)]