19901063

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{383}}^1\times {\mathrm{571}}^1$

素因数の和:974

約数の個数: 16

約数和(自身を含む): 24600576

約数和(自身を除く): 4699513

約数列:

[1, 7, 13, 91, 383, 571, 2681, 3997, 4979, 7423, 34853, 51961, 218693, 1530851, 2843009, 19901063]

約数ペア:

[(1, 19901063), (7, 2843009), (13, 1530851), (91, 218693), (383, 51961), (571, 34853), (2681, 7423), (3997, 4979)]