7977220

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2447}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 16861824

約数和(自身を除く): 8884604

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 2447, 3260, 4894, 9788, 12235, 24470, 48940, 398861, 797722, 1595444, 1994305, 3988610, 7977220]

約数ペア:

[(1, 7977220), (2, 3988610), (4, 1994305), (5, 1595444), (10, 797722), (20, 398861), (163, 48940), (326, 24470), (652, 12235), (815, 9788), (1630, 4894), (2447, 3260)]