20667140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2741}}^1$

素因数の和:2792

約数の個数: 48

約数和(自身を含む): 48368880

約数和(自身を除く): 27701740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2741, 3770, 5482, 7540, 10964, 13705, 27410, 35633, 54820, 71266, 79489, 142532, 158978, 178165, 317956, 356330, 397445, 712660, 794890, 1033357, 1589780, 2066714, 4133428, 5166785, 10333570, 20667140]

約数ペア:

[(1, 20667140), (2, 10333570), (4, 5166785), (5, 4133428), (10, 2066714), (13, 1589780), (20, 1033357), (26, 794890), (29, 712660), (52, 397445), (58, 356330), (65, 317956), (116, 178165), (130, 158978), (145, 142532), (260, 79489), (290, 71266), (377, 54820), (580, 35633), (754, 27410), (1508, 13705), (1885, 10964), (2741, 7540), (3770, 5482)]