20442556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 19071044

約数列:

[1, 2, 4, 19, 38, 47, 59, 76, 94, 97, 118, 188, 194, 236, 388, 893, 1121, 1786, 1843, 2242, 2773, 3572, 3686, 4484, 4559, 5546, 5723, 7372, 9118, 11092, 11446, 18236, 22892, 52687, 86621, 105374, 108737, 173242, 210748, 217474, 268981, 346484, 434948, 537962, 1075924, 5110639, 10221278, 20442556]

約数ペア:

[(1, 20442556), (2, 10221278), (4, 5110639), (19, 1075924), (38, 537962), (47, 434948), (59, 346484), (76, 268981), (94, 217474), (97, 210748), (118, 173242), (188, 108737), (194, 105374), (236, 86621), (388, 52687), (893, 22892), (1121, 18236), (1786, 11446), (1843, 11092), (2242, 9118), (2773, 7372), (3572, 5723), (3686, 5546), (4484, 4559)]