21643805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{11071}}^1$

素因数の和:11116

約数の個数: 16

約数和(自身を含む): 28698624

約数和(自身を除く): 7054819

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 11071, 55355, 188207, 254633, 941035, 1273165, 4328761, 21643805]

約数ペア:

[(1, 21643805), (5, 4328761), (17, 1273165), (23, 941035), (85, 254633), (115, 188207), (391, 55355), (1955, 11071)]