18492680

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{719}}^1$

素因数の和:1373

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 23238520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 719, 1286, 1438, 2572, 2876, 3215, 3595, 5144, 5752, 6430, 7190, 12860, 14380, 25720, 28760, 462317, 924634, 1849268, 2311585, 3698536, 4623170, 9246340, 18492680]

約数ペア:

[(1, 18492680), (2, 9246340), (4, 4623170), (5, 3698536), (8, 2311585), (10, 1849268), (20, 924634), (40, 462317), (643, 28760), (719, 25720), (1286, 14380), (1438, 12860), (2572, 7190), (2876, 6430), (3215, 5752), (3595, 5144)]