8519440

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{977}}^1$

素因数の和:1099

約数の個数: 40

約数和(自身を含む): 20009880

約数和(自身を除く): 11490440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 977, 1090, 1744, 1954, 2180, 3908, 4360, 4885, 7816, 8720, 9770, 15632, 19540, 39080, 78160, 106493, 212986, 425972, 532465, 851944, 1064930, 1703888, 2129860, 4259720, 8519440]

約数ペア:

[(1, 8519440), (2, 4259720), (4, 2129860), (5, 1703888), (8, 1064930), (10, 851944), (16, 532465), (20, 425972), (40, 212986), (80, 106493), (109, 78160), (218, 39080), (436, 19540), (545, 15632), (872, 9770), (977, 8720), (1090, 7816), (1744, 4885), (1954, 4360), (2180, 3908)]