20197947

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12491}}^1$

素因数の和:12519

約数の個数: 24

約数和(自身を含む): 34178112

約数和(自身を除く): 13980165

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12491, 37473, 87437, 137401, 262311, 412203, 612059, 961807, 1836177, 2885421, 6732649, 20197947]

約数ペア:

[(1, 20197947), (3, 6732649), (7, 2885421), (11, 1836177), (21, 961807), (33, 612059), (49, 412203), (77, 262311), (147, 137401), (231, 87437), (539, 37473), (1617, 12491)]