78470840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280253}}^1$

素因数の和:280271

約数の個数: 32

約数和(自身を含む): 201782880

約数和(自身を除く): 123312040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280253, 560506, 1121012, 1401265, 1961771, 2242024, 2802530, 3923542, 5605060, 7847084, 9808855, 11210120, 15694168, 19617710, 39235420, 78470840]

約数ペア:

[(1, 78470840), (2, 39235420), (4, 19617710), (5, 15694168), (7, 11210120), (8, 9808855), (10, 7847084), (14, 5605060), (20, 3923542), (28, 2802530), (35, 2242024), (40, 1961771), (56, 1401265), (70, 1121012), (140, 560506), (280, 280253)]