18879615

素因数分解:

$3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1307}}^1$

素因数の和:1428

約数の個数: 32

約数和(自身を含む): 33903360

約数和(自身を除く): 15023745

約数列:

[1, 3, 5, 9, 15, 27, 45, 107, 135, 321, 535, 963, 1307, 1605, 2889, 3921, 4815, 6535, 11763, 14445, 19605, 35289, 58815, 139849, 176445, 419547, 699245, 1258641, 2097735, 3775923, 6293205, 18879615]

約数ペア:

[(1, 18879615), (3, 6293205), (5, 3775923), (9, 2097735), (15, 1258641), (27, 699245), (45, 419547), (107, 176445), (135, 139849), (321, 58815), (535, 35289), (963, 19605), (1307, 14445), (1605, 11763), (2889, 6535), (3921, 4815)]