278301160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{677}}^1$

素因数の和:970

約数の個数: 64

約数和(自身を含む): 644371200

約数和(自身を除く): 366070040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 239, 344, 430, 478, 677, 860, 956, 1195, 1354, 1720, 1912, 2390, 2708, 3385, 4780, 5416, 6770, 9560, 10277, 13540, 20554, 27080, 29111, 41108, 51385, 58222, 82216, 102770, 116444, 145555, 161803, 205540, 232888, 291110, 323606, 411080, 582220, 647212, 809015, 1164440, 1294424, 1618030, 3236060, 6472120, 6957529, 13915058, 27830116, 34787645, 55660232, 69575290, 139150580, 278301160]

約数ペア:

[(1, 278301160), (2, 139150580), (4, 69575290), (5, 55660232), (8, 34787645), (10, 27830116), (20, 13915058), (40, 6957529), (43, 6472120), (86, 3236060), (172, 1618030), (215, 1294424), (239, 1164440), (344, 809015), (430, 647212), (478, 582220), (677, 411080), (860, 323606), (956, 291110), (1195, 232888), (1354, 205540), (1720, 161803), (1912, 145555), (2390, 116444), (2708, 102770), (3385, 82216), (4780, 58222), (5416, 51385), (6770, 41108), (9560, 29111), (10277, 27080), (13540, 20554)]