19851865

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 32

約数和(自身を含む): 27757440

約数和(自身を除く): 7905575

約数列:

[1, 5, 11, 19, 55, 95, 121, 157, 209, 605, 785, 1045, 1331, 1727, 2299, 2983, 6655, 8635, 11495, 14915, 18997, 25289, 32813, 94985, 126445, 164065, 208967, 360943, 1044835, 1804715, 3970373, 19851865]

約数ペア:

[(1, 19851865), (5, 3970373), (11, 1804715), (19, 1044835), (55, 360943), (95, 208967), (121, 164065), (157, 126445), (209, 94985), (605, 32813), (785, 25289), (1045, 18997), (1331, 14915), (1727, 11495), (2299, 8635), (2983, 6655)]