21542656

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 46766720

約数和(自身を除く): 25224064

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 43, 64, 76, 86, 103, 128, 152, 172, 206, 256, 304, 344, 412, 608, 688, 817, 824, 1216, 1376, 1634, 1648, 1957, 2432, 2752, 3268, 3296, 3914, 4429, 4864, 5504, 6536, 6592, 7828, 8858, 11008, 13072, 13184, 15656, 17716, 26144, 26368, 31312, 35432, 52288, 62624, 70864, 84151, 104576, 125248, 141728, 168302, 209152, 250496, 283456, 336604, 500992, 566912, 673208, 1133824, 1346416, 2692832, 5385664, 10771328, 21542656]

約数ペア:

[(1, 21542656), (2, 10771328), (4, 5385664), (8, 2692832), (16, 1346416), (19, 1133824), (32, 673208), (38, 566912), (43, 500992), (64, 336604), (76, 283456), (86, 250496), (103, 209152), (128, 168302), (152, 141728), (172, 125248), (206, 104576), (256, 84151), (304, 70864), (344, 62624), (412, 52288), (608, 35432), (688, 31312), (817, 26368), (824, 26144), (1216, 17716), (1376, 15656), (1634, 13184), (1648, 13072), (1957, 11008), (2432, 8858), (2752, 7828), (3268, 6592), (3296, 6536), (3914, 5504), (4429, 4864)]