40379840

素因数分解:

$2^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:765

約数の個数: 56

約数和(自身を含む): 96725232

約数和(自身を除く): 56345392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 257, 320, 491, 514, 982, 1028, 1285, 1964, 2056, 2455, 2570, 3928, 4112, 4910, 5140, 7856, 8224, 9820, 10280, 15712, 16448, 19640, 20560, 31424, 39280, 41120, 78560, 82240, 126187, 157120, 252374, 504748, 630935, 1009496, 1261870, 2018992, 2523740, 4037984, 5047480, 8075968, 10094960, 20189920, 40379840]

約数ペア:

[(1, 40379840), (2, 20189920), (4, 10094960), (5, 8075968), (8, 5047480), (10, 4037984), (16, 2523740), (20, 2018992), (32, 1261870), (40, 1009496), (64, 630935), (80, 504748), (160, 252374), (257, 157120), (320, 126187), (491, 82240), (514, 78560), (982, 41120), (1028, 39280), (1285, 31424), (1964, 20560), (2056, 19640), (2455, 16448), (2570, 15712), (3928, 10280), (4112, 9820), (4910, 8224), (5140, 7856)]