218655910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{19681}}^1$

素因数の和:19800

約数の個数: 32

約数和(自身を含む): 433633824

約数和(自身を除く): 214977914

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 2222, 5555, 11110, 19681, 39362, 98405, 196810, 216491, 432982, 1082455, 1987781, 2164910, 3975562, 9938905, 19877810, 21865591, 43731182, 109327955, 218655910]

約数ペア:

[(1, 218655910), (2, 109327955), (5, 43731182), (10, 21865591), (11, 19877810), (22, 9938905), (55, 3975562), (101, 2164910), (110, 1987781), (202, 1082455), (505, 432982), (1010, 216491), (1111, 196810), (2222, 98405), (5555, 39362), (11110, 19681)]