21321655

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3533}}^1$

素因数の和:3626

約数の個数: 16

約数和(自身を含む): 27480384

約数和(自身を除く): 6158729

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3533, 6035, 17665, 60061, 250843, 300305, 1254215, 4264331, 21321655]

約数ペア:

[(1, 21321655), (5, 4264331), (17, 1254215), (71, 300305), (85, 250843), (355, 60061), (1207, 17665), (3533, 6035)]