80142640

素因数分解:

$2^4\times 5^1\times {\mathrm{1001783}}^1$

素因数の和:1001796

約数の個数: 20

約数和(自身を含む): 186331824

約数和(自身を除く): 106189184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1001783, 2003566, 4007132, 5008915, 8014264, 10017830, 16028528, 20035660, 40071320, 80142640]

約数ペア:

[(1, 80142640), (2, 40071320), (4, 20035660), (5, 16028528), (8, 10017830), (10, 8014264), (16, 5008915), (20, 4007132), (40, 2003566), (80, 1001783)]