21238899

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^3\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 32

約数和(自身を含む): 33073920

約数和(自身を除く): 11835021

約数列:

[1, 3, 11, 17, 33, 51, 131, 187, 289, 393, 561, 867, 1441, 2227, 3179, 4323, 4913, 6681, 9537, 14739, 24497, 37859, 54043, 73491, 113577, 162129, 416449, 643603, 1249347, 1930809, 7079633, 21238899]

約数ペア:

[(1, 21238899), (3, 7079633), (11, 1930809), (17, 1249347), (33, 643603), (51, 416449), (131, 162129), (187, 113577), (289, 73491), (393, 54043), (561, 37859), (867, 24497), (1441, 14739), (2227, 9537), (3179, 6681), (4323, 4913)]