20723428

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:984

約数の個数: 36

約数和(自身を含む): 40755456

約数和(自身を除く): 20032028

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 121, 188, 242, 484, 517, 911, 1034, 1822, 2068, 3644, 5687, 10021, 11374, 20042, 22748, 40084, 42817, 85634, 110231, 171268, 220462, 440924, 470987, 941974, 1883948, 5180857, 10361714, 20723428]

約数ペア:

[(1, 20723428), (2, 10361714), (4, 5180857), (11, 1883948), (22, 941974), (44, 470987), (47, 440924), (94, 220462), (121, 171268), (188, 110231), (242, 85634), (484, 42817), (517, 40084), (911, 22748), (1034, 20042), (1822, 11374), (2068, 10021), (3644, 5687)]