19901156

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{1669}}^1$

素因数の和:1955

約数の個数: 24

約数和(自身を含む): 38156160

約数和(自身を除く): 18255004

約数列:

[1, 2, 4, 11, 22, 44, 271, 542, 1084, 1669, 2981, 3338, 5962, 6676, 11924, 18359, 36718, 73436, 452299, 904598, 1809196, 4975289, 9950578, 19901156]

約数ペア:

[(1, 19901156), (2, 9950578), (4, 4975289), (11, 1809196), (22, 904598), (44, 452299), (271, 73436), (542, 36718), (1084, 18359), (1669, 11924), (2981, 6676), (3338, 5962)]