21179145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{347}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 36715392

約数和(自身を除く): 15536247

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 313, 347, 939, 1041, 1565, 1735, 4069, 4511, 4695, 5205, 12207, 13533, 20345, 22555, 61035, 67665, 108611, 325833, 543055, 1411943, 1629165, 4235829, 7059715, 21179145]

約数ペア:

[(1, 21179145), (3, 7059715), (5, 4235829), (13, 1629165), (15, 1411943), (39, 543055), (65, 325833), (195, 108611), (313, 67665), (347, 61035), (939, 22555), (1041, 20345), (1565, 13533), (1735, 12207), (4069, 5205), (4511, 4695)]