155120840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{554003}}^1$

素因数の和:554021

約数の個数: 32

約数和(自身を含む): 398882880

約数和(自身を除く): 243762040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 554003, 1108006, 2216012, 2770015, 3878021, 4432024, 5540030, 7756042, 11080060, 15512084, 19390105, 22160120, 31024168, 38780210, 77560420, 155120840]

約数ペア:

[(1, 155120840), (2, 77560420), (4, 38780210), (5, 31024168), (7, 22160120), (8, 19390105), (10, 15512084), (14, 11080060), (20, 7756042), (28, 5540030), (35, 4432024), (40, 3878021), (56, 2770015), (70, 2216012), (140, 1108006), (280, 554003)]