20408528

素因数分解:

$2^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3877}}^1$

素因数の和:3939

約数の個数: 40

約数和(自身を含む): 46163712

約数和(自身を除く): 25755184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 56, 94, 112, 188, 329, 376, 658, 752, 1316, 2632, 3877, 5264, 7754, 15508, 27139, 31016, 54278, 62032, 108556, 182219, 217112, 364438, 434224, 728876, 1275533, 1457752, 2551066, 2915504, 5102132, 10204264, 20408528]

約数ペア:

[(1, 20408528), (2, 10204264), (4, 5102132), (7, 2915504), (8, 2551066), (14, 1457752), (16, 1275533), (28, 728876), (47, 434224), (56, 364438), (94, 217112), (112, 182219), (188, 108556), (329, 62032), (376, 54278), (658, 31016), (752, 27139), (1316, 15508), (2632, 7754), (3877, 5264)]