19877810

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19681}}^1$

素因数の和:19789

約数の個数: 16

約数和(自身を含む): 36136152

約数和(自身を除く): 16258342

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 19681, 39362, 98405, 196810, 1987781, 3975562, 9938905, 19877810]

約数ペア:

[(1, 19877810), (2, 9938905), (5, 3975562), (10, 1987781), (101, 196810), (202, 98405), (505, 39362), (1010, 19681)]