87680120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1973}}^1$

素因数の和:2096

約数の個数: 64

約数和(自身を含む): 217455840

約数和(自身を除く): 129775720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 1973, 2020, 2222, 3946, 4040, 4444, 5555, 7892, 8888, 9865, 11110, 15784, 19730, 21703, 22220, 39460, 43406, 44440, 78920, 86812, 108515, 173624, 199273, 217030, 398546, 434060, 797092, 868120, 996365, 1594184, 1992730, 2192003, 3985460, 4384006, 7970920, 8768012, 10960015, 17536024, 21920030, 43840060, 87680120]

約数ペア:

[(1, 87680120), (2, 43840060), (4, 21920030), (5, 17536024), (8, 10960015), (10, 8768012), (11, 7970920), (20, 4384006), (22, 3985460), (40, 2192003), (44, 1992730), (55, 1594184), (88, 996365), (101, 868120), (110, 797092), (202, 434060), (220, 398546), (404, 217030), (440, 199273), (505, 173624), (808, 108515), (1010, 86812), (1111, 78920), (1973, 44440), (2020, 43406), (2222, 39460), (3946, 22220), (4040, 21703), (4444, 19730), (5555, 15784), (7892, 11110), (8888, 9865)]