28283915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{7243}}^1$

素因数の和:7330

約数の個数: 16

約数和(自身を含む): 37552896

約数和(自身を除く): 9268981

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 7243, 36215, 79673, 398365, 514253, 2571265, 5656783, 28283915]

約数ペア:

[(1, 28283915), (5, 5656783), (11, 2571265), (55, 514253), (71, 398365), (355, 79673), (781, 36215), (3905, 7243)]