18979730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^2$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 42866496

約数和(自身を除く): 23886766

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 157, 314, 385, 770, 785, 1099, 1570, 1727, 2198, 3454, 5495, 8635, 10990, 12089, 17270, 24178, 24649, 49298, 60445, 120890, 123245, 172543, 246490, 271139, 345086, 542278, 862715, 1355695, 1725430, 1897973, 2711390, 3795946, 9489865, 18979730]

約数ペア:

[(1, 18979730), (2, 9489865), (5, 3795946), (7, 2711390), (10, 1897973), (11, 1725430), (14, 1355695), (22, 862715), (35, 542278), (55, 345086), (70, 271139), (77, 246490), (110, 172543), (154, 123245), (157, 120890), (314, 60445), (385, 49298), (770, 24649), (785, 24178), (1099, 17270), (1570, 12089), (1727, 10990), (2198, 8635), (3454, 5495)]