21968765

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{911}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 33094656

約数和(自身を除く): 11125891

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 911, 1855, 3445, 4555, 4823, 6377, 11843, 24115, 31885, 48283, 59215, 82901, 241415, 337981, 414505, 627679, 1689905, 3138395, 4393753, 21968765]

約数ペア:

[(1, 21968765), (5, 4393753), (7, 3138395), (13, 1689905), (35, 627679), (53, 414505), (65, 337981), (91, 241415), (265, 82901), (371, 59215), (455, 48283), (689, 31885), (911, 24115), (1855, 11843), (3445, 6377), (4555, 4823)]