20207500

素因数分解:

$2^2\times 5^4\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 45266760

約数和(自身を除く): 25059260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 100, 118, 125, 137, 236, 250, 274, 295, 500, 548, 590, 625, 685, 1180, 1250, 1370, 1475, 2500, 2740, 2950, 3425, 5900, 6850, 7375, 8083, 13700, 14750, 16166, 17125, 29500, 32332, 34250, 36875, 40415, 68500, 73750, 80830, 85625, 147500, 161660, 171250, 202075, 342500, 404150, 808300, 1010375, 2020750, 4041500, 5051875, 10103750, 20207500]

約数ペア:

[(1, 20207500), (2, 10103750), (4, 5051875), (5, 4041500), (10, 2020750), (20, 1010375), (25, 808300), (50, 404150), (59, 342500), (100, 202075), (118, 171250), (125, 161660), (137, 147500), (236, 85625), (250, 80830), (274, 73750), (295, 68500), (500, 40415), (548, 36875), (590, 34250), (625, 32332), (685, 29500), (1180, 17125), (1250, 16166), (1370, 14750), (1475, 13700), (2500, 8083), (2740, 7375), (2950, 6850), (3425, 5900)]