20914288

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{773}}^1$

素因数の和:889

約数の個数: 40

約数和(自身を含む): 43189200

約数和(自身を除く): 22274912

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 773, 1424, 1546, 1691, 3092, 3382, 6184, 6764, 12368, 13528, 14687, 27056, 29374, 58748, 68797, 117496, 137594, 234992, 275188, 550376, 1100752, 1307143, 2614286, 5228572, 10457144, 20914288]

約数ペア:

[(1, 20914288), (2, 10457144), (4, 5228572), (8, 2614286), (16, 1307143), (19, 1100752), (38, 550376), (76, 275188), (89, 234992), (152, 137594), (178, 117496), (304, 68797), (356, 58748), (712, 29374), (773, 27056), (1424, 14687), (1546, 13528), (1691, 12368), (3092, 6764), (3382, 6184)]