20125971929

素因数分解:

$7^4\times {\mathrm{2039}}^1\times {\mathrm{4111}}^1$

素因数の和:6178

約数の個数: 20

約数和(自身を含む): 23496132480

約数和(自身を除く): 3370160551

約数列:

[1, 7, 49, 343, 2039, 2401, 4111, 14273, 28777, 99911, 201439, 699377, 1410073, 4895639, 8382329, 9870511, 58676303, 410734121, 2875138847, 20125971929]

約数ペア:

[(1, 20125971929), (7, 2875138847), (49, 410734121), (343, 58676303), (2039, 9870511), (2401, 8382329), (4111, 4895639), (14273, 1410073), (28777, 699377), (99911, 201439)]