7801407940

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{464923}}^1$

素因数の和:465771

約数の個数: 24

約数和(自身を含む): 16402518720

約数和(自身を除く): 8601110780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 3356, 4195, 8390, 16780, 464923, 929846, 1859692, 2324615, 4649230, 9298460, 390070397, 780140794, 1560281588, 1950351985, 3900703970, 7801407940]

約数ペア:

[(1, 7801407940), (2, 3900703970), (4, 1950351985), (5, 1560281588), (10, 780140794), (20, 390070397), (839, 9298460), (1678, 4649230), (3356, 2324615), (4195, 1859692), (8390, 929846), (16780, 464923)]