199911891

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^2\times {\mathrm{569}}^1$

素因数の和:755

約数の個数: 24

約数和(自身を含む): 286171920

約数和(自身を除く): 86260029

約数列:

[1, 3, 17, 51, 83, 249, 569, 1411, 1707, 4233, 6889, 9673, 20667, 29019, 47227, 117113, 141681, 351339, 802859, 2408577, 3919841, 11759523, 66637297, 199911891]

約数ペア:

[(1, 199911891), (3, 66637297), (17, 11759523), (51, 3919841), (83, 2408577), (249, 802859), (569, 351339), (1411, 141681), (1707, 117113), (4233, 47227), (6889, 29019), (9673, 20667)]