80749720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28433}}^1$

素因数の和:28515

約数の個数: 32

約数和(自身を含む): 184252320

約数和(自身を除く): 103502600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 28433, 56866, 113732, 142165, 227464, 284330, 568660, 1137320, 2018743, 4037486, 8074972, 10093715, 16149944, 20187430, 40374860, 80749720]

約数ペア:

[(1, 80749720), (2, 40374860), (4, 20187430), (5, 16149944), (8, 10093715), (10, 8074972), (20, 4037486), (40, 2018743), (71, 1137320), (142, 568660), (284, 284330), (355, 227464), (568, 142165), (710, 113732), (1420, 56866), (2840, 28433)]