21495992

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 27752008

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 89, 133, 152, 178, 227, 266, 356, 454, 532, 623, 712, 908, 1064, 1246, 1589, 1691, 1816, 2492, 3178, 3382, 4313, 4984, 6356, 6764, 8626, 11837, 12712, 13528, 17252, 20203, 23674, 30191, 34504, 40406, 47348, 60382, 80812, 94696, 120764, 141421, 161624, 241528, 282842, 383857, 565684, 767714, 1131368, 1535428, 2686999, 3070856, 5373998, 10747996, 21495992]

約数ペア:

[(1, 21495992), (2, 10747996), (4, 5373998), (7, 3070856), (8, 2686999), (14, 1535428), (19, 1131368), (28, 767714), (38, 565684), (56, 383857), (76, 282842), (89, 241528), (133, 161624), (152, 141421), (178, 120764), (227, 94696), (266, 80812), (356, 60382), (454, 47348), (532, 40406), (623, 34504), (712, 30191), (908, 23674), (1064, 20203), (1246, 17252), (1589, 13528), (1691, 12712), (1816, 11837), (2492, 8626), (3178, 6764), (3382, 6356), (4313, 4984)]