21751976

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 23970904

約数列:

[1, 2, 4, 8, 17, 34, 41, 47, 68, 82, 83, 94, 136, 164, 166, 188, 328, 332, 376, 664, 697, 799, 1394, 1411, 1598, 1927, 2788, 2822, 3196, 3403, 3854, 3901, 5576, 5644, 6392, 6806, 7708, 7802, 11288, 13612, 15416, 15604, 27224, 31208, 32759, 57851, 65518, 66317, 115702, 131036, 132634, 159941, 231404, 262072, 265268, 319882, 462808, 530536, 639764, 1279528, 2718997, 5437994, 10875988, 21751976]

約数ペア:

[(1, 21751976), (2, 10875988), (4, 5437994), (8, 2718997), (17, 1279528), (34, 639764), (41, 530536), (47, 462808), (68, 319882), (82, 265268), (83, 262072), (94, 231404), (136, 159941), (164, 132634), (166, 131036), (188, 115702), (328, 66317), (332, 65518), (376, 57851), (664, 32759), (697, 31208), (799, 27224), (1394, 15604), (1411, 15416), (1598, 13612), (1927, 11288), (2788, 7802), (2822, 7708), (3196, 6806), (3403, 6392), (3854, 5644), (3901, 5576)]