20104687600

素因数分解:

$2^4\times 5^2\times {\mathrm{709}}^1\times {\mathrm{70891}}^1$

素因数の和:71618

約数の個数: 60

約数和(自身を含む): 48370320520

約数和(自身を除く): 28265632920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 709, 1418, 2836, 3545, 5672, 7090, 11344, 14180, 17725, 28360, 35450, 56720, 70891, 70900, 141782, 141800, 283564, 283600, 354455, 567128, 708910, 1134256, 1417820, 1772275, 2835640, 3544550, 5671280, 7089100, 14178200, 28356400, 50261719, 100523438, 201046876, 251308595, 402093752, 502617190, 804187504, 1005234380, 1256542975, 2010468760, 2513085950, 4020937520, 5026171900, 10052343800, 20104687600]

約数ペア:

[(1, 20104687600), (2, 10052343800), (4, 5026171900), (5, 4020937520), (8, 2513085950), (10, 2010468760), (16, 1256542975), (20, 1005234380), (25, 804187504), (40, 502617190), (50, 402093752), (80, 251308595), (100, 201046876), (200, 100523438), (400, 50261719), (709, 28356400), (1418, 14178200), (2836, 7089100), (3545, 5671280), (5672, 3544550), (7090, 2835640), (11344, 1772275), (14180, 1417820), (17725, 1134256), (28360, 708910), (35450, 567128), (56720, 354455), (70891, 283600), (70900, 283564), (141782, 141800)]