217728005

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{15647}}^1$

素因数の和:15697

約数の個数: 24

約数和(自身を含む): 299690496

約数和(自身を除く): 81962491

約数列:

[1, 5, 11, 23, 55, 115, 121, 253, 605, 1265, 2783, 13915, 15647, 78235, 172117, 359881, 860585, 1799405, 1893287, 3958691, 9466435, 19793455, 43545601, 217728005]

約数ペア:

[(1, 217728005), (5, 43545601), (11, 19793455), (23, 9466435), (55, 3958691), (115, 1893287), (121, 1799405), (253, 860585), (605, 359881), (1265, 172117), (2783, 78235), (13915, 15647)]