20193784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{691}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 40980240

約数和(自身を除く): 20786456

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 281, 562, 691, 1124, 1382, 2248, 2764, 3653, 5528, 7306, 8983, 14612, 17966, 29224, 35932, 71864, 194171, 388342, 776684, 1553368, 2524223, 5048446, 10096892, 20193784]

約数ペア:

[(1, 20193784), (2, 10096892), (4, 5048446), (8, 2524223), (13, 1553368), (26, 776684), (52, 388342), (104, 194171), (281, 71864), (562, 35932), (691, 29224), (1124, 17966), (1382, 14612), (2248, 8983), (2764, 7306), (3653, 5528)]