30999440

素因数分解:

$2^4\times 5^1\times {\mathrm{387493}}^1$

素因数の和:387506

約数の個数: 20

約数和(自身を含む): 72073884

約数和(自身を除く): 41074444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 387493, 774986, 1549972, 1937465, 3099944, 3874930, 6199888, 7749860, 15499720, 30999440]

約数ペア:

[(1, 30999440), (2, 15499720), (4, 7749860), (5, 6199888), (8, 3874930), (10, 3099944), (16, 1937465), (20, 1549972), (40, 774986), (80, 387493)]