19822220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8191}}^1$

素因数の和:8222

約数の個数: 36

約数和(自身を含む): 45760512

約数和(自身を除く): 25938292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8191, 16382, 32764, 40955, 81910, 90101, 163820, 180202, 360404, 450505, 901010, 991111, 1802020, 1982222, 3964444, 4955555, 9911110, 19822220]

約数ペア:

[(1, 19822220), (2, 9911110), (4, 4955555), (5, 3964444), (10, 1982222), (11, 1802020), (20, 991111), (22, 901010), (44, 450505), (55, 360404), (110, 180202), (121, 163820), (220, 90101), (242, 81910), (484, 40955), (605, 32764), (1210, 16382), (2420, 8191)]