18769540

素因数分解:

$2^2\times 5^1\times {\mathrm{947}}^1\times {\mathrm{991}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 39497472

約数和(自身を除く): 20727932

約数列:

[1, 2, 4, 5, 10, 20, 947, 991, 1894, 1982, 3788, 3964, 4735, 4955, 9470, 9910, 18940, 19820, 938477, 1876954, 3753908, 4692385, 9384770, 18769540]

約数ペア:

[(1, 18769540), (2, 9384770), (4, 4692385), (5, 3753908), (10, 1876954), (20, 938477), (947, 19820), (991, 18940), (1894, 9910), (1982, 9470), (3788, 4955), (3964, 4735)]