16400215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{1321}}^1$

素因数の和:1530

約数の個数: 16

約数和(自身を含む): 21321216

約数和(自身を除く): 4921001

約数列:

[1, 5, 13, 65, 191, 955, 1321, 2483, 6605, 12415, 17173, 85865, 252311, 1261555, 3280043, 16400215]

約数ペア:

[(1, 16400215), (5, 3280043), (13, 1261555), (65, 252311), (191, 85865), (955, 17173), (1321, 12415), (2483, 6605)]