251195080

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:850

約数の個数: 64

約数和(自身を含む): 577568880

約数和(自身を除く): 326373800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 101, 194, 202, 388, 404, 485, 505, 641, 776, 808, 970, 1010, 1282, 1940, 2020, 2564, 3205, 3880, 4040, 5128, 6410, 9797, 12820, 19594, 25640, 39188, 48985, 62177, 64741, 78376, 97970, 124354, 129482, 195940, 248708, 258964, 310885, 323705, 391880, 497416, 517928, 621770, 647410, 1243540, 1294820, 2487080, 2589640, 6279877, 12559754, 25119508, 31399385, 50239016, 62798770, 125597540, 251195080]

約数ペア:

[(1, 251195080), (2, 125597540), (4, 62798770), (5, 50239016), (8, 31399385), (10, 25119508), (20, 12559754), (40, 6279877), (97, 2589640), (101, 2487080), (194, 1294820), (202, 1243540), (388, 647410), (404, 621770), (485, 517928), (505, 497416), (641, 391880), (776, 323705), (808, 310885), (970, 258964), (1010, 248708), (1282, 195940), (1940, 129482), (2020, 124354), (2564, 97970), (3205, 78376), (3880, 64741), (4040, 62177), (5128, 48985), (6410, 39188), (9797, 25640), (12820, 19594)]