20781609597

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{379}}^1\times {\mathrm{6353}}^1$

素因数の和:6882

約数の個数: 48

約数和(自身を含む): 34653191040

約数和(自身を除く): 13871581443

約数列:

[1, 3, 7, 9, 21, 63, 137, 379, 411, 959, 1137, 1233, 2653, 2877, 3411, 6353, 7959, 8631, 19059, 23877, 44471, 51923, 57177, 133413, 155769, 363461, 400239, 467307, 870361, 1090383, 2407787, 2611083, 3271149, 6092527, 7223361, 7833249, 16854509, 18277581, 21670083, 50563527, 54832743, 151690581, 329866819, 989600457, 2309067733, 2968801371, 6927203199, 20781609597]

約数ペア:

[(1, 20781609597), (3, 6927203199), (7, 2968801371), (9, 2309067733), (21, 989600457), (63, 329866819), (137, 151690581), (379, 54832743), (411, 50563527), (959, 21670083), (1137, 18277581), (1233, 16854509), (2653, 7833249), (2877, 7223361), (3411, 6092527), (6353, 3271149), (7959, 2611083), (8631, 2407787), (19059, 1090383), (23877, 870361), (44471, 467307), (51923, 400239), (57177, 363461), (133413, 155769)]