21108465

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{3191}}^1$

素因数の和:3219

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 22558095

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 3191, 6615, 9573, 15955, 22337, 28719, 47865, 67011, 86157, 111685, 143595, 156359, 201033, 335055, 430785, 469077, 603099, 781795, 1005165, 1407231, 2345385, 3015495, 4221693, 7036155, 21108465]

約数ペア:

[(1, 21108465), (3, 7036155), (5, 4221693), (7, 3015495), (9, 2345385), (15, 1407231), (21, 1005165), (27, 781795), (35, 603099), (45, 469077), (49, 430785), (63, 335055), (105, 201033), (135, 156359), (147, 143595), (189, 111685), (245, 86157), (315, 67011), (441, 47865), (735, 28719), (945, 22337), (1323, 15955), (2205, 9573), (3191, 6615)]