218521689

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{773}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 323668224

約数和(自身を除く): 105146535

約数列:

[1, 3, 17, 23, 51, 69, 241, 391, 723, 773, 1173, 2319, 4097, 5543, 12291, 13141, 16629, 17779, 39423, 53337, 94231, 186293, 282693, 302243, 558879, 906729, 3166981, 4284739, 9500943, 12854217, 72840563, 218521689]

約数ペア:

[(1, 218521689), (3, 72840563), (17, 12854217), (23, 9500943), (51, 4284739), (69, 3166981), (241, 906729), (391, 558879), (723, 302243), (773, 282693), (1173, 186293), (2319, 94231), (4097, 53337), (5543, 39423), (12291, 17779), (13141, 16629)]