21065963517

素因数分解:

$3^3\times {\mathrm{241}}^1\times {\mathrm{3237431}}^1$

素因数の和:3237681

約数の個数: 16

約数和(自身を含む): 31338341760

約数和(自身を除く): 10272378243

約数列:

[1, 3, 9, 27, 241, 723, 2169, 6507, 3237431, 9712293, 29136879, 87410637, 780220871, 2340662613, 7021987839, 21065963517]

約数ペア:

[(1, 21065963517), (3, 7021987839), (9, 2340662613), (27, 780220871), (241, 87410637), (723, 29136879), (2169, 9712293), (6507, 3237431)]