18776780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7759}}^1$

素因数の和:7790

約数の個数: 36

約数和(自身を含む): 43347360

約数和(自身を除く): 24570580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7759, 15518, 31036, 38795, 77590, 85349, 155180, 170698, 341396, 426745, 853490, 938839, 1706980, 1877678, 3755356, 4694195, 9388390, 18776780]

約数ペア:

[(1, 18776780), (2, 9388390), (4, 4694195), (5, 3755356), (10, 1877678), (11, 1706980), (20, 938839), (22, 853490), (44, 426745), (55, 341396), (110, 170698), (121, 155180), (220, 85349), (242, 77590), (484, 38795), (605, 31036), (1210, 15518), (2420, 7759)]