20869850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 41347800

約数和(自身を除く): 20477950

約数列:

[1, 2, 5, 10, 25, 29, 37, 50, 58, 74, 145, 185, 290, 370, 389, 725, 778, 925, 1073, 1450, 1850, 1945, 2146, 3890, 5365, 9725, 10730, 11281, 14393, 19450, 22562, 26825, 28786, 53650, 56405, 71965, 112810, 143930, 282025, 359825, 417397, 564050, 719650, 834794, 2086985, 4173970, 10434925, 20869850]

約数ペア:

[(1, 20869850), (2, 10434925), (5, 4173970), (10, 2086985), (25, 834794), (29, 719650), (37, 564050), (50, 417397), (58, 359825), (74, 282025), (145, 143930), (185, 112810), (290, 71965), (370, 56405), (389, 53650), (725, 28786), (778, 26825), (925, 22562), (1073, 19450), (1450, 14393), (1850, 11281), (1945, 10730), (2146, 9725), (3890, 5365)]