21411045

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 39267072

約数和(自身を除く): 17856027

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 137, 151, 207, 345, 411, 453, 685, 755, 1035, 1233, 1359, 2055, 2265, 3151, 3473, 6165, 6795, 9453, 10419, 15755, 17365, 20687, 28359, 31257, 47265, 52095, 62061, 103435, 141795, 156285, 186183, 310305, 475801, 930915, 1427403, 2379005, 4282209, 7137015, 21411045]

約数ペア:

[(1, 21411045), (3, 7137015), (5, 4282209), (9, 2379005), (15, 1427403), (23, 930915), (45, 475801), (69, 310305), (115, 186183), (137, 156285), (151, 141795), (207, 103435), (345, 62061), (411, 52095), (453, 47265), (685, 31257), (755, 28359), (1035, 20687), (1233, 17365), (1359, 15755), (2055, 10419), (2265, 9453), (3151, 6795), (3473, 6165)]