20788100

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4423}}^1$

素因数の和:4484

約数の個数: 36

約数和(自身を含む): 46080384

約数和(自身を除く): 25292284

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4423, 4700, 8846, 17692, 22115, 44230, 88460, 110575, 207881, 221150, 415762, 442300, 831524, 1039405, 2078810, 4157620, 5197025, 10394050, 20788100]

約数ペア:

[(1, 20788100), (2, 10394050), (4, 5197025), (5, 4157620), (10, 2078810), (20, 1039405), (25, 831524), (47, 442300), (50, 415762), (94, 221150), (100, 207881), (188, 110575), (235, 88460), (470, 44230), (940, 22115), (1175, 17692), (2350, 8846), (4423, 4700)]