21931091

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{601}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 27104448

約数和(自身を除く): 5173357

約数列:

[1, 7, 13, 91, 401, 601, 2807, 4207, 5213, 7813, 36491, 54691, 241001, 1687007, 3133013, 21931091]

約数ペア:

[(1, 21931091), (7, 3133013), (13, 1687007), (91, 241001), (401, 54691), (601, 36491), (2807, 7813), (4207, 5213)]