28515975

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 50187264

約数和(自身を除く): 21671289

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 183, 271, 305, 345, 575, 813, 915, 1355, 1403, 1525, 1725, 4065, 4209, 4575, 6233, 6775, 7015, 16531, 18699, 20325, 21045, 31165, 35075, 49593, 82655, 93495, 105225, 155825, 247965, 380213, 413275, 467475, 1140639, 1239825, 1901065, 5703195, 9505325, 28515975]

約数ペア:

[(1, 28515975), (3, 9505325), (5, 5703195), (15, 1901065), (23, 1239825), (25, 1140639), (61, 467475), (69, 413275), (75, 380213), (115, 247965), (183, 155825), (271, 105225), (305, 93495), (345, 82655), (575, 49593), (813, 35075), (915, 31165), (1355, 21045), (1403, 20325), (1525, 18699), (1725, 16531), (4065, 7015), (4209, 6775), (4575, 6233)]