20700351

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6991}}^1$

素因数の和:7051

約数の個数: 24

約数和(自身を含む): 34904064

約数和(自身を除く): 14203713

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6991, 20973, 48937, 62919, 146811, 328577, 440433, 985731, 2300039, 2957193, 6900117, 20700351]

約数ペア:

[(1, 20700351), (3, 6900117), (7, 2957193), (9, 2300039), (21, 985731), (47, 440433), (63, 328577), (141, 146811), (329, 62919), (423, 48937), (987, 20973), (2961, 6991)]