20467447

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 29417472

約数和(自身を除く): 8950025

約数列:

[1, 7, 11, 13, 23, 49, 77, 91, 127, 143, 161, 253, 299, 539, 637, 889, 1001, 1127, 1397, 1651, 1771, 2093, 2921, 3289, 6223, 7007, 9779, 11557, 12397, 14651, 18161, 20447, 23023, 32131, 37973, 68453, 80899, 127127, 143129, 161161, 224917, 265811, 417703, 889889, 1574419, 1860677, 2923921, 20467447]

約数ペア:

[(1, 20467447), (7, 2923921), (11, 1860677), (13, 1574419), (23, 889889), (49, 417703), (77, 265811), (91, 224917), (127, 161161), (143, 143129), (161, 127127), (253, 80899), (299, 68453), (539, 37973), (637, 32131), (889, 23023), (1001, 20447), (1127, 18161), (1397, 14651), (1651, 12397), (1771, 11557), (2093, 9779), (2921, 7007), (3289, 6223)]