21054418

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19531}}^1$

素因数の和:19558

約数の個数: 24

約数和(自身を含む): 40079664

約数和(自身を除く): 19025246

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19531, 39062, 136717, 214841, 273434, 429682, 957019, 1503887, 1914038, 3007774, 10527209, 21054418]

約数ペア:

[(1, 21054418), (2, 10527209), (7, 3007774), (11, 1914038), (14, 1503887), (22, 957019), (49, 429682), (77, 273434), (98, 214841), (154, 136717), (539, 39062), (1078, 19531)]