20956172

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 19686388

約数列:

[1, 2, 4, 17, 34, 47, 68, 79, 83, 94, 158, 166, 188, 316, 332, 799, 1343, 1411, 1598, 2686, 2822, 3196, 3713, 3901, 5372, 5644, 6557, 7426, 7802, 13114, 14852, 15604, 26228, 63121, 66317, 111469, 126242, 132634, 222938, 252484, 265268, 308179, 445876, 616358, 1232716, 5239043, 10478086, 20956172]

約数ペア:

[(1, 20956172), (2, 10478086), (4, 5239043), (17, 1232716), (34, 616358), (47, 445876), (68, 308179), (79, 265268), (83, 252484), (94, 222938), (158, 132634), (166, 126242), (188, 111469), (316, 66317), (332, 63121), (799, 26228), (1343, 15604), (1411, 14852), (1598, 13114), (2686, 7802), (2822, 7426), (3196, 6557), (3713, 5644), (3901, 5372)]