28560189

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 46785600

約数和(自身を除く): 18225411

約数列:

[1, 3, 7, 21, 37, 49, 59, 89, 111, 147, 177, 259, 267, 413, 623, 777, 1239, 1813, 1869, 2183, 2891, 3293, 4361, 5251, 5439, 6549, 8673, 9879, 13083, 15281, 15753, 23051, 36757, 45843, 69153, 106967, 110271, 161357, 194287, 257299, 320901, 484071, 582861, 771897, 1360009, 4080027, 9520063, 28560189]

約数ペア:

[(1, 28560189), (3, 9520063), (7, 4080027), (21, 1360009), (37, 771897), (49, 582861), (59, 484071), (89, 320901), (111, 257299), (147, 194287), (177, 161357), (259, 110271), (267, 106967), (413, 69153), (623, 45843), (777, 36757), (1239, 23051), (1813, 15753), (1869, 15281), (2183, 13083), (2891, 9879), (3293, 8673), (4361, 6549), (5251, 5439)]