21353588

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{647}}^1$

素因数の和:911

約数の個数: 24

約数和(自身を含む): 38610432

約数和(自身を除く): 17256844

約数列:

[1, 2, 4, 37, 74, 148, 223, 446, 647, 892, 1294, 2588, 8251, 16502, 23939, 33004, 47878, 95756, 144281, 288562, 577124, 5338397, 10676794, 21353588]

約数ペア:

[(1, 21353588), (2, 10676794), (4, 5338397), (37, 577124), (74, 288562), (148, 144281), (223, 95756), (446, 47878), (647, 33004), (892, 23939), (1294, 16502), (2588, 8251)]