21071875

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{613}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 28779408

約数和(自身を除く): 7707533

約数列:

[1, 5, 11, 25, 55, 125, 275, 613, 625, 1375, 3065, 3125, 6743, 6875, 15325, 33715, 34375, 76625, 168575, 383125, 842875, 1915625, 4214375, 21071875]

約数ペア:

[(1, 21071875), (5, 4214375), (11, 1915625), (25, 842875), (55, 383125), (125, 168575), (275, 76625), (613, 34375), (625, 33715), (1375, 15325), (3065, 6875), (3125, 6743)]