21749962

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:538

約数の個数: 24

約数和(自身を含む): 35608140

約数和(自身を除く): 13858178

約数列:

[1, 2, 13, 26, 169, 229, 281, 338, 458, 562, 2977, 3653, 5954, 7306, 38701, 47489, 64349, 77402, 94978, 128698, 836537, 1673074, 10874981, 21749962]

約数ペア:

[(1, 21749962), (2, 10874981), (13, 1673074), (26, 836537), (169, 128698), (229, 94978), (281, 77402), (338, 64349), (458, 47489), (562, 38701), (2977, 7306), (3653, 5954)]