128356340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{916831}}^1$

素因数の和:916847

約数の個数: 24

約数和(自身を含む): 308055552

約数和(自身を除く): 179699212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 916831, 1833662, 3667324, 4584155, 6417817, 9168310, 12835634, 18336620, 25671268, 32089085, 64178170, 128356340]

約数ペア:

[(1, 128356340), (2, 64178170), (4, 32089085), (5, 25671268), (7, 18336620), (10, 12835634), (14, 9168310), (20, 6417817), (28, 4584155), (35, 3667324), (70, 1833662), (140, 916831)]