64987660

素因数分解:

$2^2\times 5^1\times {\mathrm{739}}^1\times {\mathrm{4397}}^1$

素因数の和:5145

約数の個数: 24

約数和(自身を含む): 136689840

約数和(自身を除く): 71702180

約数列:

[1, 2, 4, 5, 10, 20, 739, 1478, 2956, 3695, 4397, 7390, 8794, 14780, 17588, 21985, 43970, 87940, 3249383, 6498766, 12997532, 16246915, 32493830, 64987660]

約数ペア:

[(1, 64987660), (2, 32493830), (4, 16246915), (5, 12997532), (10, 6498766), (20, 3249383), (739, 87940), (1478, 43970), (2956, 21985), (3695, 17588), (4397, 14780), (7390, 8794)]