40142840

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3623}}^1$

素因数の和:3911

約数の個数: 32

約数和(自身を含む): 90672480

約数和(自身を除く): 50529640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 3623, 5540, 7246, 11080, 14492, 18115, 28984, 36230, 72460, 144920, 1003571, 2007142, 4014284, 5017855, 8028568, 10035710, 20071420, 40142840]

約数ペア:

[(1, 40142840), (2, 20071420), (4, 10035710), (5, 8028568), (8, 5017855), (10, 4014284), (20, 2007142), (40, 1003571), (277, 144920), (554, 72460), (1108, 36230), (1385, 28984), (2216, 18115), (2770, 14492), (3623, 11080), (5540, 7246)]