18840305

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:206

約数の個数: 32

約数和(自身を含む): 26352000

約数和(自身を除く): 7511695

約数列:

[1, 5, 11, 19, 55, 95, 121, 149, 209, 605, 745, 1045, 1331, 1639, 2299, 2831, 6655, 8195, 11495, 14155, 18029, 25289, 31141, 90145, 126445, 155705, 198319, 342551, 991595, 1712755, 3768061, 18840305]

約数ペア:

[(1, 18840305), (5, 3768061), (11, 1712755), (19, 991595), (55, 342551), (95, 198319), (121, 155705), (149, 126445), (209, 90145), (605, 31141), (745, 25289), (1045, 18029), (1331, 14155), (1639, 11495), (2299, 8195), (2831, 6655)]