1218659905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{81707}}^1$

素因数の和:81888

約数の個数: 16

約数和(自身を含む): 1549183680

約数和(自身を除く): 330523775

約数列:

[1, 5, 19, 95, 157, 785, 2983, 14915, 81707, 408535, 1552433, 7762165, 12827999, 64139995, 243731981, 1218659905]

約数ペア:

[(1, 1218659905), (5, 243731981), (19, 64139995), (95, 12827999), (157, 7762165), (785, 1552433), (2983, 408535), (14915, 81707)]