21254825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1543}}^1$

素因数の和:1601

約数の個数: 24

約数和(自身を含む): 28718400

約数和(自身を除く): 7463575

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1543, 2755, 7715, 13775, 29317, 38575, 44747, 146585, 223735, 732925, 850193, 1118675, 4250965, 21254825]

約数ペア:

[(1, 21254825), (5, 4250965), (19, 1118675), (25, 850193), (29, 732925), (95, 223735), (145, 146585), (475, 44747), (551, 38575), (725, 29317), (1543, 13775), (2755, 7715)]