8729980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 21159936

約数和(自身を除く): 12429956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 491, 508, 635, 889, 982, 1270, 1778, 1964, 2455, 2540, 3437, 3556, 4445, 4910, 6874, 8890, 9820, 13748, 17185, 17780, 34370, 62357, 68740, 124714, 249428, 311785, 436499, 623570, 872998, 1247140, 1745996, 2182495, 4364990, 8729980]

約数ペア:

[(1, 8729980), (2, 4364990), (4, 2182495), (5, 1745996), (7, 1247140), (10, 872998), (14, 623570), (20, 436499), (28, 311785), (35, 249428), (70, 124714), (127, 68740), (140, 62357), (254, 34370), (491, 17780), (508, 17185), (635, 13748), (889, 9820), (982, 8890), (1270, 6874), (1778, 4910), (1964, 4445), (2455, 3556), (2540, 3437)]