21057237

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{601}}^1$

素因数の和:853

約数の個数: 24

約数和(自身を含む): 32399640

約数和(自身を除く): 11342403

約数列:

[1, 3, 9, 17, 51, 153, 229, 601, 687, 1803, 2061, 3893, 5409, 10217, 11679, 30651, 35037, 91953, 137629, 412887, 1238661, 2339693, 7019079, 21057237]

約数ペア:

[(1, 21057237), (3, 7019079), (9, 2339693), (17, 1238661), (51, 412887), (153, 137629), (229, 91953), (601, 35037), (687, 30651), (1803, 11679), (2061, 10217), (3893, 5409)]