68531980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{28319}}^1$

素因数の和:28350

約数の個数: 36

約数和(自身を含む): 158195520

約数和(自身を除く): 89663540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 28319, 56638, 113276, 141595, 283190, 311509, 566380, 623018, 1246036, 1557545, 3115090, 3426599, 6230180, 6853198, 13706396, 17132995, 34265990, 68531980]

約数ペア:

[(1, 68531980), (2, 34265990), (4, 17132995), (5, 13706396), (10, 6853198), (11, 6230180), (20, 3426599), (22, 3115090), (44, 1557545), (55, 1246036), (110, 623018), (121, 566380), (220, 311509), (242, 283190), (484, 141595), (605, 113276), (1210, 56638), (2420, 28319)]