16940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2$

素因数の和:38

約数の個数: 36

約数和(自身を含む): 44688

約数和(自身を除く): 27748

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 8470, 16940]

約数ペア:

[(1, 16940), (2, 8470), (4, 4235), (5, 3388), (7, 2420), (10, 1694), (11, 1540), (14, 1210), (20, 847), (22, 770), (28, 605), (35, 484), (44, 385), (55, 308), (70, 242), (77, 220), (110, 154), (121, 140)]