20528420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4057}}^1$

素因数の和:4100

約数の個数: 48

約数和(自身を含む): 49085568

約数和(自身を除く): 28557148

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4057, 5060, 8114, 16228, 20285, 40570, 44627, 81140, 89254, 93311, 178508, 186622, 223135, 373244, 446270, 466555, 892540, 933110, 1026421, 1866220, 2052842, 4105684, 5132105, 10264210, 20528420]

約数ペア:

[(1, 20528420), (2, 10264210), (4, 5132105), (5, 4105684), (10, 2052842), (11, 1866220), (20, 1026421), (22, 933110), (23, 892540), (44, 466555), (46, 446270), (55, 373244), (92, 223135), (110, 186622), (115, 178508), (220, 93311), (230, 89254), (253, 81140), (460, 44627), (506, 40570), (1012, 20285), (1265, 16228), (2530, 8114), (4057, 5060)]