19655990

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 16632010

約数列:

[1, 2, 5, 10, 79, 139, 158, 179, 278, 358, 395, 695, 790, 895, 1390, 1790, 10981, 14141, 21962, 24881, 28282, 49762, 54905, 70705, 109810, 124405, 141410, 248810, 1965599, 3931198, 9827995, 19655990]

約数ペア:

[(1, 19655990), (2, 9827995), (5, 3931198), (10, 1965599), (79, 248810), (139, 141410), (158, 124405), (179, 109810), (278, 70705), (358, 54905), (395, 49762), (695, 28282), (790, 24881), (895, 21962), (1390, 14141), (1790, 10981)]