20123180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:279

約数の個数: 96

約数和(自身を含む): 53706240

約数和(自身を除く): 33583060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 73, 77, 110, 140, 146, 154, 179, 220, 292, 308, 358, 365, 385, 511, 716, 730, 770, 803, 895, 1022, 1253, 1460, 1540, 1606, 1790, 1969, 2044, 2506, 2555, 3212, 3580, 3938, 4015, 5012, 5110, 5621, 6265, 7876, 8030, 9845, 10220, 11242, 12530, 13067, 13783, 16060, 19690, 22484, 25060, 26134, 27566, 28105, 39380, 52268, 55132, 56210, 65335, 68915, 91469, 112420, 130670, 137830, 143737, 182938, 261340, 275660, 287474, 365876, 457345, 574948, 718685, 914690, 1006159, 1437370, 1829380, 2012318, 2874740, 4024636, 5030795, 10061590, 20123180]

約数ペア:

[(1, 20123180), (2, 10061590), (4, 5030795), (5, 4024636), (7, 2874740), (10, 2012318), (11, 1829380), (14, 1437370), (20, 1006159), (22, 914690), (28, 718685), (35, 574948), (44, 457345), (55, 365876), (70, 287474), (73, 275660), (77, 261340), (110, 182938), (140, 143737), (146, 137830), (154, 130670), (179, 112420), (220, 91469), (292, 68915), (308, 65335), (358, 56210), (365, 55132), (385, 52268), (511, 39380), (716, 28105), (730, 27566), (770, 26134), (803, 25060), (895, 22484), (1022, 19690), (1253, 16060), (1460, 13783), (1540, 13067), (1606, 12530), (1790, 11242), (1969, 10220), (2044, 9845), (2506, 8030), (2555, 7876), (3212, 6265), (3580, 5621), (3938, 5110), (4015, 5012)]