18509860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22573}}^1$

素因数の和:22623

約数の個数: 24

約数和(自身を含む): 39820536

約数和(自身を除く): 21310676

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22573, 45146, 90292, 112865, 225730, 451460, 925493, 1850986, 3701972, 4627465, 9254930, 18509860]

約数ペア:

[(1, 18509860), (2, 9254930), (4, 4627465), (5, 3701972), (10, 1850986), (20, 925493), (41, 451460), (82, 225730), (164, 112865), (205, 90292), (410, 45146), (820, 22573)]