19982305

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19687}}^1$

素因数の和:19728

約数の個数: 16

約数和(自身を含む): 28350720

約数和(自身を除く): 8368415

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 19687, 98435, 137809, 570923, 689045, 2854615, 3996461, 19982305]

約数ペア:

[(1, 19982305), (5, 3996461), (7, 2854615), (29, 689045), (35, 570923), (145, 137809), (203, 98435), (1015, 19687)]