128876838

素因数分解:

$2^1\times 3^1\times {\mathrm{263}}^1\times {\mathrm{81671}}^1$

素因数の和:81939

約数の個数: 16

約数和(自身を含む): 258736896

約数和(自身を除く): 129860058

約数列:

[1, 2, 3, 6, 263, 526, 789, 1578, 81671, 163342, 245013, 490026, 21479473, 42958946, 64438419, 128876838]

約数ペア:

[(1, 128876838), (2, 64438419), (3, 42958946), (6, 21479473), (263, 490026), (526, 245013), (789, 163342), (1578, 81671)]