19619821

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 21821184

約数和(自身を除く): 2201363

約数列:

[1, 13, 47, 163, 197, 611, 2119, 2561, 7661, 9259, 32111, 99593, 120367, 417443, 1509217, 19619821]

約数ペア:

[(1, 19619821), (13, 1509217), (47, 417443), (163, 120367), (197, 99593), (611, 32111), (2119, 9259), (2561, 7661)]