21280396

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{373}}^1\times {\mathrm{839}}^1$

素因数の和:1233

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 18303764

約数列:

[1, 2, 4, 17, 34, 68, 373, 746, 839, 1492, 1678, 3356, 6341, 12682, 14263, 25364, 28526, 57052, 312947, 625894, 1251788, 5320099, 10640198, 21280396]

約数ペア:

[(1, 21280396), (2, 10640198), (4, 5320099), (17, 1251788), (34, 625894), (68, 312947), (373, 57052), (746, 28526), (839, 25364), (1492, 14263), (1678, 12682), (3356, 6341)]