20391501

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 10574259

約数列:

[1, 3, 13, 23, 39, 69, 127, 179, 299, 381, 537, 897, 1651, 2327, 2921, 4117, 4953, 6981, 8763, 12351, 22733, 37973, 53521, 68199, 113919, 160563, 295529, 522859, 886587, 1568577, 6797167, 20391501]

約数ペア:

[(1, 20391501), (3, 6797167), (13, 1568577), (23, 886587), (39, 522859), (69, 295529), (127, 160563), (179, 113919), (299, 68199), (381, 53521), (537, 37973), (897, 22733), (1651, 12351), (2327, 8763), (2921, 6981), (4117, 4953)]