16670840

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1019}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 37638000

約数和(自身を除く): 20967160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1019, 1636, 2038, 2045, 3272, 4076, 4090, 5095, 8152, 8180, 10190, 16360, 20380, 40760, 416771, 833542, 1667084, 2083855, 3334168, 4167710, 8335420, 16670840]

約数ペア:

[(1, 16670840), (2, 8335420), (4, 4167710), (5, 3334168), (8, 2083855), (10, 1667084), (20, 833542), (40, 416771), (409, 40760), (818, 20380), (1019, 16360), (1636, 10190), (2038, 8180), (2045, 8152), (3272, 5095), (4076, 4090)]