81990532

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{809}}^1\times {\mathrm{1949}}^1$

素因数の和:2775

約数の個数: 24

約数和(自身を含む): 154791000

約数和(自身を除く): 72800468

約数列:

[1, 2, 4, 13, 26, 52, 809, 1618, 1949, 3236, 3898, 7796, 10517, 21034, 25337, 42068, 50674, 101348, 1576741, 3153482, 6306964, 20497633, 40995266, 81990532]

約数ペア:

[(1, 81990532), (2, 40995266), (4, 20497633), (13, 6306964), (26, 3153482), (52, 1576741), (809, 101348), (1618, 50674), (1949, 42068), (3236, 25337), (3898, 21034), (7796, 10517)]