281005520

素因数分解:

$2^4\times 5^1\times {\mathrm{1327}}^1\times {\mathrm{2647}}^1$

素因数の和:3987

約数の個数: 40

約数和(自身を含む): 654077184

約数和(自身を除く): 373071664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1327, 2647, 2654, 5294, 5308, 6635, 10588, 10616, 13235, 13270, 21176, 21232, 26470, 26540, 42352, 52940, 53080, 105880, 106160, 211760, 3512569, 7025138, 14050276, 17562845, 28100552, 35125690, 56201104, 70251380, 140502760, 281005520]

約数ペア:

[(1, 281005520), (2, 140502760), (4, 70251380), (5, 56201104), (8, 35125690), (10, 28100552), (16, 17562845), (20, 14050276), (40, 7025138), (80, 3512569), (1327, 211760), (2647, 106160), (2654, 105880), (5294, 53080), (5308, 52940), (6635, 42352), (10588, 26540), (10616, 26470), (13235, 21232), (13270, 21176)]