20947570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{607}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 26330510

約数列:

[1, 2, 5, 7, 10, 14, 17, 29, 34, 35, 58, 70, 85, 119, 145, 170, 203, 238, 290, 406, 493, 595, 607, 986, 1015, 1190, 1214, 2030, 2465, 3035, 3451, 4249, 4930, 6070, 6902, 8498, 10319, 17255, 17603, 20638, 21245, 34510, 35206, 42490, 51595, 72233, 88015, 103190, 123221, 144466, 176030, 246442, 299251, 361165, 598502, 616105, 722330, 1232210, 1496255, 2094757, 2992510, 4189514, 10473785, 20947570]

約数ペア:

[(1, 20947570), (2, 10473785), (5, 4189514), (7, 2992510), (10, 2094757), (14, 1496255), (17, 1232210), (29, 722330), (34, 616105), (35, 598502), (58, 361165), (70, 299251), (85, 246442), (119, 176030), (145, 144466), (170, 123221), (203, 103190), (238, 88015), (290, 72233), (406, 51595), (493, 42490), (595, 35206), (607, 34510), (986, 21245), (1015, 20638), (1190, 17603), (1214, 17255), (2030, 10319), (2465, 8498), (3035, 6902), (3451, 6070), (4249, 4930)]