20259687

素因数分解:

$3^1\times 7^2\times {\mathrm{283}}^1\times {\mathrm{487}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 31598976

約数和(自身を除く): 11339289

約数列:

[1, 3, 7, 21, 49, 147, 283, 487, 849, 1461, 1981, 3409, 5943, 10227, 13867, 23863, 41601, 71589, 137821, 413463, 964747, 2894241, 6753229, 20259687]

約数ペア:

[(1, 20259687), (3, 6753229), (7, 2894241), (21, 964747), (49, 413463), (147, 137821), (283, 71589), (487, 41601), (849, 23863), (1461, 13867), (1981, 10227), (3409, 5943)]