18919285

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 28576512

約数和(自身を除く): 9657227

約数列:

[1, 5, 7, 11, 35, 55, 77, 157, 313, 385, 785, 1099, 1565, 1727, 2191, 3443, 5495, 8635, 10955, 12089, 17215, 24101, 49141, 60445, 120505, 245705, 343987, 540551, 1719935, 2702755, 3783857, 18919285]

約数ペア:

[(1, 18919285), (5, 3783857), (7, 2702755), (11, 1719935), (35, 540551), (55, 343987), (77, 245705), (157, 120505), (313, 60445), (385, 49141), (785, 24101), (1099, 17215), (1565, 12089), (1727, 10955), (2191, 8635), (3443, 5495)]