20504825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{431}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 27962496

約数和(自身を除く): 7457671

約数列:

[1, 5, 11, 25, 55, 173, 275, 431, 865, 1903, 2155, 4325, 4741, 9515, 10775, 23705, 47575, 74563, 118525, 372815, 820193, 1864075, 4100965, 20504825]

約数ペア:

[(1, 20504825), (5, 4100965), (11, 1864075), (25, 820193), (55, 372815), (173, 118525), (275, 74563), (431, 47575), (865, 23705), (1903, 10775), (2155, 9515), (4325, 4741)]