18780440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67073}}^1$

素因数の和:67091

約数の個数: 32

約数和(自身を含む): 48293280

約数和(自身を除く): 29512840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 67073, 134146, 268292, 335365, 469511, 536584, 670730, 939022, 1341460, 1878044, 2347555, 2682920, 3756088, 4695110, 9390220, 18780440]

約数ペア:

[(1, 18780440), (2, 9390220), (4, 4695110), (5, 3756088), (7, 2682920), (8, 2347555), (10, 1878044), (14, 1341460), (20, 939022), (28, 670730), (35, 536584), (40, 469511), (56, 335365), (70, 268292), (140, 134146), (280, 67073)]