21011837

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{5569}}^1$

素因数の和:5601

約数の個数: 16

約数和(自身を含む): 26736000

約数和(自身を除く): 5724163

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 5569, 38983, 61259, 272881, 428813, 1910167, 3001691, 21011837]

約数ペア:

[(1, 21011837), (7, 3001691), (11, 1910167), (49, 428813), (77, 272881), (343, 61259), (539, 38983), (3773, 5569)]