21320338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12239}}^1$

素因数の和:12321

約数の個数: 16

約数和(自身を含む): 34957440

約数和(自身を除く): 13637102

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12239, 24478, 159107, 318214, 820013, 1640026, 10660169, 21320338]

約数ペア:

[(1, 21320338), (2, 10660169), (13, 1640026), (26, 820013), (67, 318214), (134, 159107), (871, 24478), (1742, 12239)]