19128890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{15809}}^1$

素因数の和:15838

約数の個数: 24

約数和(自身を含む): 37849140

約数和(自身を除く): 18720250

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 15809, 31618, 79045, 158090, 173899, 347798, 869495, 1738990, 1912889, 3825778, 9564445, 19128890]

約数ペア:

[(1, 19128890), (2, 9564445), (5, 3825778), (10, 1912889), (11, 1738990), (22, 869495), (55, 347798), (110, 173899), (121, 158090), (242, 79045), (605, 31618), (1210, 15809)]