128668820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{919063}}^1$

素因数の和:919079

約数の個数: 24

約数和(自身を含む): 308805504

約数和(自身を除く): 180136684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 919063, 1838126, 3676252, 4595315, 6433441, 9190630, 12866882, 18381260, 25733764, 32167205, 64334410, 128668820]

約数ペア:

[(1, 128668820), (2, 64334410), (4, 32167205), (5, 25733764), (7, 18381260), (10, 12866882), (14, 9190630), (20, 6433441), (28, 4595315), (35, 3676252), (70, 1838126), (140, 919063)]