319539760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{557}}^1$

素因数の和:742

約数の個数: 80

約数和(自身を含む): 762219072

約数和(自身を除く): 442679312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 101, 142, 202, 284, 355, 404, 505, 557, 568, 710, 808, 1010, 1114, 1136, 1420, 1616, 2020, 2228, 2785, 2840, 4040, 4456, 5570, 5680, 7171, 8080, 8912, 11140, 14342, 22280, 28684, 35855, 39547, 44560, 56257, 57368, 71710, 79094, 112514, 114736, 143420, 158188, 197735, 225028, 281285, 286840, 316376, 395470, 450056, 562570, 573680, 632752, 790940, 900112, 1125140, 1581880, 2250280, 3163760, 3994247, 4500560, 7988494, 15976988, 19971235, 31953976, 39942470, 63907952, 79884940, 159769880, 319539760]

約数ペア:

[(1, 319539760), (2, 159769880), (4, 79884940), (5, 63907952), (8, 39942470), (10, 31953976), (16, 19971235), (20, 15976988), (40, 7988494), (71, 4500560), (80, 3994247), (101, 3163760), (142, 2250280), (202, 1581880), (284, 1125140), (355, 900112), (404, 790940), (505, 632752), (557, 573680), (568, 562570), (710, 450056), (808, 395470), (1010, 316376), (1114, 286840), (1136, 281285), (1420, 225028), (1616, 197735), (2020, 158188), (2228, 143420), (2785, 114736), (2840, 112514), (4040, 79094), (4456, 71710), (5570, 57368), (5680, 56257), (7171, 44560), (8080, 39547), (8912, 35855), (11140, 28684), (14342, 22280)]