19745385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 64

約数和(自身を含む): 37103616

約数和(自身を除く): 17358231

約数列:

[1, 3, 5, 11, 15, 23, 33, 43, 55, 69, 115, 121, 129, 165, 215, 253, 345, 363, 473, 605, 645, 759, 989, 1265, 1331, 1419, 1815, 2365, 2783, 2967, 3795, 3993, 4945, 5203, 6655, 7095, 8349, 10879, 13915, 14835, 15609, 19965, 26015, 30613, 32637, 41745, 54395, 57233, 78045, 91839, 119669, 153065, 163185, 171699, 286165, 359007, 459195, 598345, 858495, 1316359, 1795035, 3949077, 6581795, 19745385]

約数ペア:

[(1, 19745385), (3, 6581795), (5, 3949077), (11, 1795035), (15, 1316359), (23, 858495), (33, 598345), (43, 459195), (55, 359007), (69, 286165), (115, 171699), (121, 163185), (129, 153065), (165, 119669), (215, 91839), (253, 78045), (345, 57233), (363, 54395), (473, 41745), (605, 32637), (645, 30613), (759, 26015), (989, 19965), (1265, 15609), (1331, 14835), (1419, 13915), (1815, 10879), (2365, 8349), (2783, 7095), (2967, 6655), (3795, 5203), (3993, 4945)]