21545264

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103583}}^1$

素因数の和:103604

約数の個数: 20

約数和(自身を含む): 44955456

約数和(自身を除く): 23410192

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103583, 207166, 414332, 828664, 1346579, 1657328, 2693158, 5386316, 10772632, 21545264]

約数ペア:

[(1, 21545264), (2, 10772632), (4, 5386316), (8, 2693158), (13, 1657328), (16, 1346579), (26, 828664), (52, 414332), (104, 207166), (208, 103583)]