20606740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13381}}^1$

素因数の和:13408

約数の個数: 48

約数和(自身を含む): 53956224

約数和(自身を除く): 33349484

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13381, 26762, 53524, 66905, 93667, 133810, 147191, 187334, 267620, 294382, 374668, 468335, 588764, 735955, 936670, 1030337, 1471910, 1873340, 2060674, 2943820, 4121348, 5151685, 10303370, 20606740]

約数ペア:

[(1, 20606740), (2, 10303370), (4, 5151685), (5, 4121348), (7, 2943820), (10, 2060674), (11, 1873340), (14, 1471910), (20, 1030337), (22, 936670), (28, 735955), (35, 588764), (44, 468335), (55, 374668), (70, 294382), (77, 267620), (110, 187334), (140, 147191), (154, 133810), (220, 93667), (308, 66905), (385, 53524), (770, 26762), (1540, 13381)]