18979334

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{78427}}^1$

素因数の和:78451

約数の個数: 12

約数和(自身を含む): 31292772

約数和(自身を除く): 12313438

約数列:

[1, 2, 11, 22, 121, 242, 78427, 156854, 862697, 1725394, 9489667, 18979334]

約数ペア:

[(1, 18979334), (2, 9489667), (11, 1725394), (22, 862697), (121, 156854), (242, 78427)]