18785420

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2963}}^1$

素因数の和:3289

約数の個数: 24

約数和(自身を含む): 39587184

約数和(自身を除く): 20801764

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 2963, 3170, 5926, 6340, 11852, 14815, 29630, 59260, 939271, 1878542, 3757084, 4696355, 9392710, 18785420]

約数ペア:

[(1, 18785420), (2, 9392710), (4, 4696355), (5, 3757084), (10, 1878542), (20, 939271), (317, 59260), (634, 29630), (1268, 14815), (1585, 11852), (2963, 6340), (3170, 5926)]