18965986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{23531}}^1$

素因数の和:23577

約数の個数: 16

約数和(自身を含む): 31627008

約数和(自身を除く): 12661022

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 23531, 47062, 305903, 611806, 729461, 1458922, 9482993, 18965986]

約数ペア:

[(1, 18965986), (2, 9482993), (13, 1458922), (26, 729461), (31, 611806), (62, 305903), (403, 47062), (806, 23531)]