128538340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{918131}}^1$

素因数の和:918147

約数の個数: 24

約数和(自身を含む): 308492352

約数和(自身を除く): 179954012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 918131, 1836262, 3672524, 4590655, 6426917, 9181310, 12853834, 18362620, 25707668, 32134585, 64269170, 128538340]

約数ペア:

[(1, 128538340), (2, 64269170), (4, 32134585), (5, 25707668), (7, 18362620), (10, 12853834), (14, 9181310), (20, 6426917), (28, 4590655), (35, 3672524), (70, 1836262), (140, 918131)]