21725919

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1231}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 11138913

約数列:

[1, 3, 9, 37, 53, 111, 159, 333, 477, 1231, 1961, 3693, 5883, 11079, 17649, 45547, 65243, 136641, 195729, 409923, 587187, 2413991, 7241973, 21725919]

約数ペア:

[(1, 21725919), (3, 7241973), (9, 2413991), (37, 587187), (53, 409923), (111, 195729), (159, 136641), (333, 65243), (477, 45547), (1231, 17649), (1961, 11079), (3693, 5883)]