20968004

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 19747132

約数列:

[1, 2, 4, 17, 34, 43, 68, 71, 86, 101, 142, 172, 202, 284, 404, 731, 1207, 1462, 1717, 2414, 2924, 3053, 3434, 4343, 4828, 6106, 6868, 7171, 8686, 12212, 14342, 17372, 28684, 51901, 73831, 103802, 121907, 147662, 207604, 243814, 295324, 308353, 487628, 616706, 1233412, 5242001, 10484002, 20968004]

約数ペア:

[(1, 20968004), (2, 10484002), (4, 5242001), (17, 1233412), (34, 616706), (43, 487628), (68, 308353), (71, 295324), (86, 243814), (101, 207604), (142, 147662), (172, 121907), (202, 103802), (284, 73831), (404, 51901), (731, 28684), (1207, 17372), (1462, 14342), (1717, 12212), (2414, 8686), (2924, 7171), (3053, 6868), (3434, 6106), (4343, 4828)]