16918220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{6991}}^1$

素因数の和:7022

約数の個数: 36

約数和(自身を含む): 39057312

約数和(自身を除く): 22139092

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 6991, 13982, 27964, 34955, 69910, 76901, 139820, 153802, 307604, 384505, 769010, 845911, 1538020, 1691822, 3383644, 4229555, 8459110, 16918220]

約数ペア:

[(1, 16918220), (2, 8459110), (4, 4229555), (5, 3383644), (10, 1691822), (11, 1538020), (20, 845911), (22, 769010), (44, 384505), (55, 307604), (110, 153802), (121, 139820), (220, 76901), (242, 69910), (484, 34955), (605, 27964), (1210, 13982), (2420, 6991)]