19904367

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6277}}^1$

素因数の和:6438

約数の個数: 16

約数和(自身を含む): 30536192

約数和(自身を除く): 10631825

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6277, 18831, 43939, 131817, 947827, 2843481, 6634789, 19904367]

約数ペア:

[(1, 19904367), (3, 6634789), (7, 2843481), (21, 947827), (151, 131817), (453, 43939), (1057, 18831), (3171, 6277)]