8737540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 21168000

約数和(自身を除く): 12430460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 449, 556, 695, 898, 973, 1390, 1796, 1946, 2245, 2780, 3143, 3892, 4490, 4865, 6286, 8980, 9730, 12572, 15715, 19460, 31430, 62411, 62860, 124822, 249644, 312055, 436877, 624110, 873754, 1248220, 1747508, 2184385, 4368770, 8737540]

約数ペア:

[(1, 8737540), (2, 4368770), (4, 2184385), (5, 1747508), (7, 1248220), (10, 873754), (14, 624110), (20, 436877), (28, 312055), (35, 249644), (70, 124822), (139, 62860), (140, 62411), (278, 31430), (449, 19460), (556, 15715), (695, 12572), (898, 9730), (973, 8980), (1390, 6286), (1796, 4865), (1946, 4490), (2245, 3892), (2780, 3143)]