80688820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5179}}^1$

素因数の和:5248

約数の個数: 48

約数和(自身を含む): 182750400

約数和(自身を除く): 102061580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 5179, 7790, 10358, 15580, 20716, 25895, 51790, 98401, 103580, 196802, 212339, 393604, 424678, 492005, 849356, 984010, 1061695, 1968020, 2123390, 4034441, 4246780, 8068882, 16137764, 20172205, 40344410, 80688820]

約数ペア:

[(1, 80688820), (2, 40344410), (4, 20172205), (5, 16137764), (10, 8068882), (19, 4246780), (20, 4034441), (38, 2123390), (41, 1968020), (76, 1061695), (82, 984010), (95, 849356), (164, 492005), (190, 424678), (205, 393604), (380, 212339), (410, 196802), (779, 103580), (820, 98401), (1558, 51790), (3116, 25895), (3895, 20716), (5179, 15580), (7790, 10358)]