20517548192

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{123707}}^1$

素因数の和:123861

約数の個数: 48

約数和(自身を含む): 41524322112

約数和(自身を除く): 21006773920

約数列:

[1, 2, 4, 8, 16, 32, 71, 73, 142, 146, 284, 292, 568, 584, 1136, 1168, 2272, 2336, 5183, 10366, 20732, 41464, 82928, 123707, 165856, 247414, 494828, 989656, 1979312, 3958624, 8783197, 9030611, 17566394, 18061222, 35132788, 36122444, 70265576, 72244888, 140531152, 144489776, 281062304, 288979552, 641173381, 1282346762, 2564693524, 5129387048, 10258774096, 20517548192]

約数ペア:

[(1, 20517548192), (2, 10258774096), (4, 5129387048), (8, 2564693524), (16, 1282346762), (32, 641173381), (71, 288979552), (73, 281062304), (142, 144489776), (146, 140531152), (284, 72244888), (292, 70265576), (568, 36122444), (584, 35132788), (1136, 18061222), (1168, 17566394), (2272, 9030611), (2336, 8783197), (5183, 3958624), (10366, 1979312), (20732, 989656), (41464, 494828), (82928, 247414), (123707, 165856)]