21943035

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 20081925

約数列:

[1, 3, 5, 9, 15, 23, 27, 37, 45, 69, 111, 115, 135, 185, 191, 207, 333, 345, 555, 573, 621, 851, 955, 999, 1035, 1665, 1719, 2553, 2865, 3105, 4255, 4393, 4995, 5157, 7067, 7659, 8595, 12765, 13179, 21201, 21965, 22977, 25785, 35335, 38295, 39537, 63603, 65895, 106005, 114885, 118611, 162541, 190809, 197685, 318015, 487623, 593055, 812705, 954045, 1462869, 2438115, 4388607, 7314345, 21943035]

約数ペア:

[(1, 21943035), (3, 7314345), (5, 4388607), (9, 2438115), (15, 1462869), (23, 954045), (27, 812705), (37, 593055), (45, 487623), (69, 318015), (111, 197685), (115, 190809), (135, 162541), (185, 118611), (191, 114885), (207, 106005), (333, 65895), (345, 63603), (555, 39537), (573, 38295), (621, 35335), (851, 25785), (955, 22977), (999, 21965), (1035, 21201), (1665, 13179), (1719, 12765), (2553, 8595), (2865, 7659), (3105, 7067), (4255, 5157), (4393, 4995)]