21039825

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12197}}^1$

素因数の和:12233

約数の個数: 24

約数和(自身を含む): 36301248

約数和(自身を除く): 15261423

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12197, 36591, 60985, 182955, 280531, 304925, 841593, 914775, 1402655, 4207965, 7013275, 21039825]

約数ペア:

[(1, 21039825), (3, 7013275), (5, 4207965), (15, 1402655), (23, 914775), (25, 841593), (69, 304925), (75, 280531), (115, 182955), (345, 60985), (575, 36591), (1725, 12197)]