21342565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{977}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 27250992

約数和(自身を除く): 5908427

約数列:

[1, 5, 17, 85, 257, 977, 1285, 4369, 4885, 16609, 21845, 83045, 251089, 1255445, 4268513, 21342565]

約数ペア:

[(1, 21342565), (5, 4268513), (17, 1255445), (85, 251089), (257, 83045), (977, 21845), (1285, 16609), (4369, 4885)]