27781880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{317}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 71893440

約数和(自身を除く): 44111560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 313, 317, 626, 634, 1252, 1268, 1565, 1585, 2191, 2219, 2504, 2536, 3130, 3170, 4382, 4438, 6260, 6340, 8764, 8876, 10955, 11095, 12520, 12680, 17528, 17752, 21910, 22190, 43820, 44380, 87640, 88760, 99221, 198442, 396884, 496105, 694547, 793768, 992210, 1389094, 1984420, 2778188, 3472735, 3968840, 5556376, 6945470, 13890940, 27781880]

約数ペア:

[(1, 27781880), (2, 13890940), (4, 6945470), (5, 5556376), (7, 3968840), (8, 3472735), (10, 2778188), (14, 1984420), (20, 1389094), (28, 992210), (35, 793768), (40, 694547), (56, 496105), (70, 396884), (140, 198442), (280, 99221), (313, 88760), (317, 87640), (626, 44380), (634, 43820), (1252, 22190), (1268, 21910), (1565, 17752), (1585, 17528), (2191, 12680), (2219, 12520), (2504, 11095), (2536, 10955), (3130, 8876), (3170, 8764), (4382, 6340), (4438, 6260)]