20995895

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:203

約数の個数: 32

約数和(自身を含む): 27748224

約数和(自身を除く): 6752329

約数列:

[1, 5, 23, 41, 61, 73, 115, 205, 305, 365, 943, 1403, 1679, 2501, 2993, 4453, 4715, 7015, 8395, 12505, 14965, 22265, 57523, 68839, 102419, 182573, 287615, 344195, 512095, 912865, 4199179, 20995895]

約数ペア:

[(1, 20995895), (5, 4199179), (23, 912865), (41, 512095), (61, 344195), (73, 287615), (115, 182573), (205, 102419), (305, 68839), (365, 57523), (943, 22265), (1403, 14965), (1679, 12505), (2501, 8395), (2993, 7015), (4453, 4715)]