20828290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4441}}^1$

素因数の和:4522

約数の個数: 32

約数和(自身を含む): 43496064

約数和(自身を除く): 22667774

約数列:

[1, 2, 5, 7, 10, 14, 35, 67, 70, 134, 335, 469, 670, 938, 2345, 4441, 4690, 8882, 22205, 31087, 44410, 62174, 155435, 297547, 310870, 595094, 1487735, 2082829, 2975470, 4165658, 10414145, 20828290]

約数ペア:

[(1, 20828290), (2, 10414145), (5, 4165658), (7, 2975470), (10, 2082829), (14, 1487735), (35, 595094), (67, 310870), (70, 297547), (134, 155435), (335, 62174), (469, 44410), (670, 31087), (938, 22205), (2345, 8882), (4441, 4690)]