128404172

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{189947}}^1$

素因数の和:189977

約数の個数: 18

約数和(自身を含む): 243323388

約数和(自身を除く): 114919216

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 189947, 379894, 759788, 2469311, 4938622, 9877244, 32101043, 64202086, 128404172]

約数ペア:

[(1, 128404172), (2, 64202086), (4, 32101043), (13, 9877244), (26, 4938622), (52, 2469311), (169, 759788), (338, 379894), (676, 189947)]