20695880

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{919}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 46699200

約数和(自身を除く): 26003320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 919, 1126, 1838, 2252, 2815, 3676, 4504, 4595, 5630, 7352, 9190, 11260, 18380, 22520, 36760, 517397, 1034794, 2069588, 2586985, 4139176, 5173970, 10347940, 20695880]

約数ペア:

[(1, 20695880), (2, 10347940), (4, 5173970), (5, 4139176), (8, 2586985), (10, 2069588), (20, 1034794), (40, 517397), (563, 36760), (919, 22520), (1126, 18380), (1838, 11260), (2252, 9190), (2815, 7352), (3676, 5630), (4504, 4595)]