20590700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:411

約数の個数: 72

約数和(自身を含む): 49288512

約数和(自身を除く): 28697812

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 47, 50, 52, 65, 94, 100, 130, 188, 235, 260, 325, 337, 470, 611, 650, 674, 940, 1175, 1222, 1300, 1348, 1685, 2350, 2444, 3055, 3370, 4381, 4700, 6110, 6740, 8425, 8762, 12220, 15275, 15839, 16850, 17524, 21905, 30550, 31678, 33700, 43810, 61100, 63356, 79195, 87620, 109525, 158390, 205907, 219050, 316780, 395975, 411814, 438100, 791950, 823628, 1029535, 1583900, 2059070, 4118140, 5147675, 10295350, 20590700]

約数ペア:

[(1, 20590700), (2, 10295350), (4, 5147675), (5, 4118140), (10, 2059070), (13, 1583900), (20, 1029535), (25, 823628), (26, 791950), (47, 438100), (50, 411814), (52, 395975), (65, 316780), (94, 219050), (100, 205907), (130, 158390), (188, 109525), (235, 87620), (260, 79195), (325, 63356), (337, 61100), (470, 43810), (611, 33700), (650, 31678), (674, 30550), (940, 21905), (1175, 17524), (1222, 16850), (1300, 15839), (1348, 15275), (1685, 12220), (2350, 8762), (2444, 8425), (3055, 6740), (3370, 6110), (4381, 4700)]