20138405

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{13381}}^1$

素因数の和:13436

約数の個数: 16

約数和(自身を含む): 28262784

約数和(自身を除く): 8124379

約数列:

[1, 5, 7, 35, 43, 215, 301, 1505, 13381, 66905, 93667, 468335, 575383, 2876915, 4027681, 20138405]

約数ペア:

[(1, 20138405), (5, 4027681), (7, 2876915), (35, 575383), (43, 468335), (215, 93667), (301, 66905), (1505, 13381)]