7988440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4871}}^1$

素因数の和:4923

約数の個数: 32

約数和(自身を含む): 18416160

約数和(自身を除く): 10427720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 4871, 9742, 19484, 24355, 38968, 48710, 97420, 194840, 199711, 399422, 798844, 998555, 1597688, 1997110, 3994220, 7988440]

約数ペア:

[(1, 7988440), (2, 3994220), (4, 1997110), (5, 1597688), (8, 998555), (10, 798844), (20, 399422), (40, 199711), (41, 194840), (82, 97420), (164, 48710), (205, 38968), (328, 24355), (410, 19484), (820, 9742), (1640, 4871)]