7042780

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{887}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 14843808

約数和(自身を除く): 7801028

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 887, 1588, 1774, 1985, 3548, 3970, 4435, 7940, 8870, 17740, 352139, 704278, 1408556, 1760695, 3521390, 7042780]

約数ペア:

[(1, 7042780), (2, 3521390), (4, 1760695), (5, 1408556), (10, 704278), (20, 352139), (397, 17740), (794, 8870), (887, 7940), (1588, 4435), (1774, 3970), (1985, 3548)]