21589315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^2$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 29310768

約数和(自身を除く): 7721453

約数列:

[1, 5, 11, 37, 55, 103, 185, 407, 515, 1133, 2035, 3811, 5665, 10609, 19055, 41921, 53045, 116699, 209605, 392533, 583495, 1962665, 4317863, 21589315]

約数ペア:

[(1, 21589315), (5, 4317863), (11, 1962665), (37, 583495), (55, 392533), (103, 209605), (185, 116699), (407, 53045), (515, 41921), (1133, 19055), (2035, 10609), (3811, 5665)]