80714500

素因数分解:

$2^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{1481}}^1$

素因数の和:1609

約数の個数: 48

約数和(自身を含む): 178017840

約数和(自身を除く): 97303340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 125, 218, 250, 436, 500, 545, 1090, 1481, 2180, 2725, 2962, 5450, 5924, 7405, 10900, 13625, 14810, 27250, 29620, 37025, 54500, 74050, 148100, 161429, 185125, 322858, 370250, 645716, 740500, 807145, 1614290, 3228580, 4035725, 8071450, 16142900, 20178625, 40357250, 80714500]

約数ペア:

[(1, 80714500), (2, 40357250), (4, 20178625), (5, 16142900), (10, 8071450), (20, 4035725), (25, 3228580), (50, 1614290), (100, 807145), (109, 740500), (125, 645716), (218, 370250), (250, 322858), (436, 185125), (500, 161429), (545, 148100), (1090, 74050), (1481, 54500), (2180, 37025), (2725, 29620), (2962, 27250), (5450, 14810), (5924, 13625), (7405, 10900)]