80502680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{257}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 187246080

約数和(自身を除く): 106743400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 191, 205, 257, 328, 382, 410, 514, 764, 820, 955, 1028, 1285, 1528, 1640, 1910, 2056, 2570, 3820, 5140, 7640, 7831, 10280, 10537, 15662, 21074, 31324, 39155, 42148, 49087, 52685, 62648, 78310, 84296, 98174, 105370, 156620, 196348, 210740, 245435, 313240, 392696, 421480, 490870, 981740, 1963480, 2012567, 4025134, 8050268, 10062835, 16100536, 20125670, 40251340, 80502680]

約数ペア:

[(1, 80502680), (2, 40251340), (4, 20125670), (5, 16100536), (8, 10062835), (10, 8050268), (20, 4025134), (40, 2012567), (41, 1963480), (82, 981740), (164, 490870), (191, 421480), (205, 392696), (257, 313240), (328, 245435), (382, 210740), (410, 196348), (514, 156620), (764, 105370), (820, 98174), (955, 84296), (1028, 78310), (1285, 62648), (1528, 52685), (1640, 49087), (1910, 42148), (2056, 39155), (2570, 31324), (3820, 21074), (5140, 15662), (7640, 10537), (7831, 10280)]