218596209

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1\times {\mathrm{643}}^1$

素因数の和:1061

約数の個数: 32

約数和(自身を含む): 328903680

約数和(自身を除く): 110307471

約数列:

[1, 3, 13, 23, 39, 69, 299, 379, 643, 897, 1137, 1929, 4927, 8359, 8717, 14781, 14789, 25077, 26151, 44367, 113321, 192257, 243697, 339963, 576771, 731091, 3168061, 5605031, 9504183, 16815093, 72865403, 218596209]

約数ペア:

[(1, 218596209), (3, 72865403), (13, 16815093), (23, 9504183), (39, 5605031), (69, 3168061), (299, 731091), (379, 576771), (643, 339963), (897, 243697), (1137, 192257), (1929, 113321), (4927, 44367), (8359, 26151), (8717, 25077), (14781, 14789)]