19955142020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90705191}}^1$

素因数の和:90705211

約数の個数: 24

約数和(自身を含む): 45715416768

約数和(自身を除く): 25760274748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90705191, 181410382, 362820764, 453525955, 907051910, 997757101, 1814103820, 1995514202, 3991028404, 4988785505, 9977571010, 19955142020]

約数ペア:

[(1, 19955142020), (2, 9977571010), (4, 4988785505), (5, 3991028404), (10, 1995514202), (11, 1814103820), (20, 997757101), (22, 907051910), (44, 453525955), (55, 362820764), (110, 181410382), (220, 90705191)]