218542840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{293}}^1\times {\mathrm{643}}^1$

素因数の和:976

約数の個数: 64

約数和(自身を含む): 511207200

約数和(自身を除く): 292664360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 293, 580, 586, 643, 1160, 1172, 1286, 1465, 2344, 2572, 2930, 3215, 5144, 5860, 6430, 8497, 11720, 12860, 16994, 18647, 25720, 33988, 37294, 42485, 67976, 74588, 84970, 93235, 149176, 169940, 186470, 188399, 339880, 372940, 376798, 745880, 753596, 941995, 1507192, 1883990, 3767980, 5463571, 7535960, 10927142, 21854284, 27317855, 43708568, 54635710, 109271420, 218542840]

約数ペア:

[(1, 218542840), (2, 109271420), (4, 54635710), (5, 43708568), (8, 27317855), (10, 21854284), (20, 10927142), (29, 7535960), (40, 5463571), (58, 3767980), (116, 1883990), (145, 1507192), (232, 941995), (290, 753596), (293, 745880), (580, 376798), (586, 372940), (643, 339880), (1160, 188399), (1172, 186470), (1286, 169940), (1465, 149176), (2344, 93235), (2572, 84970), (2930, 74588), (3215, 67976), (5144, 42485), (5860, 37294), (6430, 33988), (8497, 25720), (11720, 18647), (12860, 16994)]