3968840

素因数分解:

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

素因数の和:641

約数の個数: 32

約数和(自身を含む): 8986680

約数和(自身を除く): 5017840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 317, 626, 634, 1252, 1268, 1565, 1585, 2504, 2536, 3130, 3170, 6260, 6340, 12520, 12680, 99221, 198442, 396884, 496105, 793768, 992210, 1984420, 3968840]

約数ペア:

[(1, 3968840), (2, 1984420), (4, 992210), (5, 793768), (8, 496105), (10, 396884), (20, 198442), (40, 99221), (313, 12680), (317, 12520), (626, 6340), (634, 6260), (1252, 3170), (1268, 3130), (1565, 2536), (1585, 2504)]