20687636500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1009153}}^1$

素因数の和:1009213

約数の個数: 48

約数和(自身を含む): 46283839056

約数和(自身を除く): 25596202556

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 1025, 2050, 4100, 5125, 10250, 20500, 1009153, 2018306, 4036612, 5045765, 10091530, 20183060, 25228825, 41375273, 50457650, 82750546, 100915300, 126144125, 165501092, 206876365, 252288250, 413752730, 504576500, 827505460, 1034381825, 2068763650, 4137527300, 5171909125, 10343818250, 20687636500]

約数ペア:

[(1, 20687636500), (2, 10343818250), (4, 5171909125), (5, 4137527300), (10, 2068763650), (20, 1034381825), (25, 827505460), (41, 504576500), (50, 413752730), (82, 252288250), (100, 206876365), (125, 165501092), (164, 126144125), (205, 100915300), (250, 82750546), (410, 50457650), (500, 41375273), (820, 25228825), (1025, 20183060), (2050, 10091530), (4100, 5045765), (5125, 4036612), (10250, 2018306), (20500, 1009153)]