20684888

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 26316712

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 47, 56, 58, 94, 116, 188, 203, 232, 271, 329, 376, 406, 542, 658, 812, 1084, 1316, 1363, 1624, 1897, 2168, 2632, 2726, 3794, 5452, 7588, 7859, 9541, 10904, 12737, 15176, 15718, 19082, 25474, 31436, 38164, 50948, 55013, 62872, 76328, 89159, 101896, 110026, 178318, 220052, 356636, 369373, 440104, 713272, 738746, 1477492, 2585611, 2954984, 5171222, 10342444, 20684888]

約数ペア:

[(1, 20684888), (2, 10342444), (4, 5171222), (7, 2954984), (8, 2585611), (14, 1477492), (28, 738746), (29, 713272), (47, 440104), (56, 369373), (58, 356636), (94, 220052), (116, 178318), (188, 110026), (203, 101896), (232, 89159), (271, 76328), (329, 62872), (376, 55013), (406, 50948), (542, 38164), (658, 31436), (812, 25474), (1084, 19082), (1316, 15718), (1363, 15176), (1624, 12737), (1897, 10904), (2168, 9541), (2632, 7859), (2726, 7588), (3794, 5452)]