1280839220

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{487}}^1\times {\mathrm{1229}}^1$

素因数の和:1832

約数の個数: 48

約数和(自身を含む): 2722688640

約数和(自身を除く): 1441849420

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 487, 535, 974, 1070, 1229, 1948, 2140, 2435, 2458, 4870, 4916, 6145, 9740, 12290, 24580, 52109, 104218, 131503, 208436, 260545, 263006, 521090, 526012, 598523, 657515, 1042180, 1197046, 1315030, 2394092, 2630060, 2992615, 5985230, 11970460, 64041961, 128083922, 256167844, 320209805, 640419610, 1280839220]

約数ペア:

[(1, 1280839220), (2, 640419610), (4, 320209805), (5, 256167844), (10, 128083922), (20, 64041961), (107, 11970460), (214, 5985230), (428, 2992615), (487, 2630060), (535, 2394092), (974, 1315030), (1070, 1197046), (1229, 1042180), (1948, 657515), (2140, 598523), (2435, 526012), (2458, 521090), (4870, 263006), (4916, 260545), (6145, 208436), (9740, 131503), (12290, 104218), (24580, 52109)]