68749780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{28409}}^1$

素因数の和:28440

約数の個数: 36

約数和(自身を含む): 158698260

約数和(自身を除く): 89948480

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 28409, 56818, 113636, 142045, 284090, 312499, 568180, 624998, 1249996, 1562495, 3124990, 3437489, 6249980, 6874978, 13749956, 17187445, 34374890, 68749780]

約数ペア:

[(1, 68749780), (2, 34374890), (4, 17187445), (5, 13749956), (10, 6874978), (11, 6249980), (20, 3437489), (22, 3124990), (44, 1562495), (55, 1249996), (110, 624998), (121, 568180), (220, 312499), (242, 284090), (484, 142045), (605, 113636), (1210, 56818), (2420, 28409)]