21061712

素因数分解:

$2^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1087}}^1$

素因数の和:1275

約数の個数: 40

約数和(自身を含む): 46949376

約数和(自身を除く): 25887664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 173, 346, 692, 1087, 1211, 1384, 2174, 2422, 2768, 4348, 4844, 7609, 8696, 9688, 15218, 17392, 19376, 30436, 60872, 121744, 188051, 376102, 752204, 1316357, 1504408, 2632714, 3008816, 5265428, 10530856, 21061712]

約数ペア:

[(1, 21061712), (2, 10530856), (4, 5265428), (7, 3008816), (8, 2632714), (14, 1504408), (16, 1316357), (28, 752204), (56, 376102), (112, 188051), (173, 121744), (346, 60872), (692, 30436), (1087, 19376), (1211, 17392), (1384, 15218), (2174, 9688), (2422, 8696), (2768, 7609), (4348, 4844)]