21951545

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 35721216

約数和(自身を除く): 13769671

約数列:

[1, 5, 7, 11, 23, 35, 37, 55, 67, 77, 115, 161, 185, 253, 259, 335, 385, 407, 469, 737, 805, 851, 1265, 1295, 1541, 1771, 2035, 2345, 2479, 2849, 3685, 4255, 5159, 5957, 7705, 8855, 9361, 10787, 12395, 14245, 16951, 17353, 25795, 27269, 29785, 46805, 53935, 57017, 65527, 84755, 86765, 118657, 136345, 190883, 285085, 327635, 399119, 593285, 627187, 954415, 1995595, 3135935, 4390309, 21951545]

約数ペア:

[(1, 21951545), (5, 4390309), (7, 3135935), (11, 1995595), (23, 954415), (35, 627187), (37, 593285), (55, 399119), (67, 327635), (77, 285085), (115, 190883), (161, 136345), (185, 118657), (253, 86765), (259, 84755), (335, 65527), (385, 57017), (407, 53935), (469, 46805), (737, 29785), (805, 27269), (851, 25795), (1265, 17353), (1295, 16951), (1541, 14245), (1771, 12395), (2035, 10787), (2345, 9361), (2479, 8855), (2849, 7705), (3685, 5957), (4255, 5159)]