87977060

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 188924400

約数和(自身を除く): 100947340

約数列:

[1, 2, 4, 5, 10, 20, 97, 101, 194, 202, 388, 404, 449, 485, 505, 898, 970, 1010, 1796, 1940, 2020, 2245, 4490, 8980, 9797, 19594, 39188, 43553, 45349, 48985, 87106, 90698, 97970, 174212, 181396, 195940, 217765, 226745, 435530, 453490, 871060, 906980, 4398853, 8797706, 17595412, 21994265, 43988530, 87977060]

約数ペア:

[(1, 87977060), (2, 43988530), (4, 21994265), (5, 17595412), (10, 8797706), (20, 4398853), (97, 906980), (101, 871060), (194, 453490), (202, 435530), (388, 226745), (404, 217765), (449, 195940), (485, 181396), (505, 174212), (898, 97970), (970, 90698), (1010, 87106), (1796, 48985), (1940, 45349), (2020, 43553), (2245, 39188), (4490, 19594), (8980, 9797)]