19905837

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5237}}^1$

素因数の和:5428

約数の個数: 16

約数和(自身を含む): 30506112

約数和(自身を除く): 10600275

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5237, 15711, 36659, 109977, 947897, 2843691, 6635279, 19905837]

約数ペア:

[(1, 19905837), (3, 6635279), (7, 2843691), (21, 947897), (181, 109977), (543, 36659), (1267, 15711), (3801, 5237)]