20191355

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{521}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 25406784

約数和(自身を除く): 5215429

約数列:

[1, 5, 23, 115, 337, 521, 1685, 2605, 7751, 11983, 38755, 59915, 175577, 877885, 4038271, 20191355]

約数ペア:

[(1, 20191355), (5, 4038271), (23, 877885), (115, 175577), (337, 59915), (521, 38755), (1685, 11983), (2605, 7751)]