19809993

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{3947}}^1$

素因数の和:4196

約数の個数: 16

約数和(自身を含む): 30320640

約数和(自身を除く): 10510647

約数列:

[1, 3, 7, 21, 239, 717, 1673, 3947, 5019, 11841, 27629, 82887, 943333, 2829999, 6603331, 19809993]

約数ペア:

[(1, 19809993), (3, 6603331), (7, 2829999), (21, 943333), (239, 82887), (717, 27629), (1673, 11841), (3947, 5019)]