21309718

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1\times {\mathrm{409}}^1$

素因数の和:759

約数の個数: 16

約数和(自身を含む): 32472000

約数和(自身を除く): 11162282

約数列:

[1, 2, 109, 218, 239, 409, 478, 818, 26051, 44581, 52102, 89162, 97751, 195502, 10654859, 21309718]

約数ペア:

[(1, 21309718), (2, 10654859), (109, 195502), (218, 97751), (239, 89162), (409, 52102), (478, 44581), (818, 26051)]