400000055

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{51713}}^1$

素因数の和:51755

約数の個数: 32

約数和(自身を含む): 625532544

約数和(自身を除く): 225532489

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 455, 595, 1105, 1547, 7735, 51713, 258565, 361991, 672269, 879121, 1809955, 3361345, 4395605, 4705883, 6153847, 11428573, 23529415, 30769235, 57142865, 80000011, 400000055]

約数ペア:

[(1, 400000055), (5, 80000011), (7, 57142865), (13, 30769235), (17, 23529415), (35, 11428573), (65, 6153847), (85, 4705883), (91, 4395605), (119, 3361345), (221, 1809955), (455, 879121), (595, 672269), (1105, 361991), (1547, 258565), (7735, 51713)]