18191620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 22305788

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 557, 710, 1114, 1420, 1633, 2228, 2785, 3266, 5570, 6532, 8165, 11140, 12811, 16330, 25622, 32660, 39547, 51244, 64055, 79094, 128110, 158188, 197735, 256220, 395470, 790940, 909581, 1819162, 3638324, 4547905, 9095810, 18191620]

約数ペア:

[(1, 18191620), (2, 9095810), (4, 4547905), (5, 3638324), (10, 1819162), (20, 909581), (23, 790940), (46, 395470), (71, 256220), (92, 197735), (115, 158188), (142, 128110), (230, 79094), (284, 64055), (355, 51244), (460, 39547), (557, 32660), (710, 25622), (1114, 16330), (1420, 12811), (1633, 11140), (2228, 8165), (2785, 6532), (3266, 5570)]