21538335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 43868160

約数和(自身を除く): 22329825

約数列:

[1, 3, 5, 7, 13, 15, 21, 31, 35, 39, 65, 91, 93, 105, 155, 195, 217, 273, 403, 455, 465, 509, 651, 1085, 1209, 1365, 1527, 2015, 2545, 2821, 3255, 3563, 6045, 6617, 7635, 8463, 10689, 14105, 15779, 17815, 19851, 33085, 42315, 46319, 47337, 53445, 78895, 99255, 110453, 138957, 205127, 231595, 236685, 331359, 552265, 615381, 694785, 1025635, 1435889, 1656795, 3076905, 4307667, 7179445, 21538335]

約数ペア:

[(1, 21538335), (3, 7179445), (5, 4307667), (7, 3076905), (13, 1656795), (15, 1435889), (21, 1025635), (31, 694785), (35, 615381), (39, 552265), (65, 331359), (91, 236685), (93, 231595), (105, 205127), (155, 138957), (195, 110453), (217, 99255), (273, 78895), (403, 53445), (455, 47337), (465, 46319), (509, 42315), (651, 33085), (1085, 19851), (1209, 17815), (1365, 15779), (1527, 14105), (2015, 10689), (2545, 8463), (2821, 7635), (3255, 6617), (3563, 6045)]