31290705

素因数分解:

$3^4\times 5^1\times {\mathrm{77261}}^1$

素因数の和:77278

約数の個数: 20

約数和(自身を含む): 56092212

約数和(自身を除く): 24801507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 77261, 231783, 386305, 695349, 1158915, 2086047, 3476745, 6258141, 10430235, 31290705]

約数ペア:

[(1, 31290705), (3, 10430235), (5, 6258141), (9, 3476745), (15, 2086047), (27, 1158915), (45, 695349), (81, 386305), (135, 231783), (405, 77261)]