39156789

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{421}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 61794304

約数和(自身を除く): 22637515

約数列:

[1, 3, 7, 21, 43, 103, 129, 301, 309, 421, 721, 903, 1263, 2163, 2947, 4429, 8841, 13287, 18103, 31003, 43363, 54309, 93009, 126721, 130089, 303541, 380163, 910623, 1864609, 5593827, 13052263, 39156789]

約数ペア:

[(1, 39156789), (3, 13052263), (7, 5593827), (21, 1864609), (43, 910623), (103, 380163), (129, 303541), (301, 130089), (309, 126721), (421, 93009), (721, 54309), (903, 43363), (1263, 31003), (2163, 18103), (2947, 13287), (4429, 8841)]