21993328

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1499}}^1$

素因数の和:1645

約数の個数: 40

約数和(自身を含む): 49104000

約数和(自身を除く): 27110672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1499, 1834, 2096, 2998, 3668, 5996, 7336, 10493, 11992, 14672, 20986, 23984, 41972, 83944, 167888, 196369, 392738, 785476, 1374583, 1570952, 2749166, 3141904, 5498332, 10996664, 21993328]

約数ペア:

[(1, 21993328), (2, 10996664), (4, 5498332), (7, 3141904), (8, 2749166), (14, 1570952), (16, 1374583), (28, 785476), (56, 392738), (112, 196369), (131, 167888), (262, 83944), (524, 41972), (917, 23984), (1048, 20986), (1499, 14672), (1834, 11992), (2096, 10493), (2998, 7336), (3668, 5996)]