20998340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8677}}^1$

素因数の和:8708

約数の個数: 36

約数和(自身を含む): 48475308

約数和(自身を除く): 27476968

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8677, 17354, 34708, 43385, 86770, 95447, 173540, 190894, 381788, 477235, 954470, 1049917, 1908940, 2099834, 4199668, 5249585, 10499170, 20998340]

約数ペア:

[(1, 20998340), (2, 10499170), (4, 5249585), (5, 4199668), (10, 2099834), (11, 1908940), (20, 1049917), (22, 954470), (44, 477235), (55, 381788), (110, 190894), (121, 173540), (220, 95447), (242, 86770), (484, 43385), (605, 34708), (1210, 17354), (2420, 8677)]