266668280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:704

約数の個数: 64

約数和(自身を含む): 611388000

約数和(自身を除く): 344719720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 149, 202, 298, 404, 443, 505, 596, 745, 808, 886, 1010, 1192, 1490, 1772, 2020, 2215, 2980, 3544, 4040, 4430, 5960, 8860, 15049, 17720, 30098, 44743, 60196, 66007, 75245, 89486, 120392, 132014, 150490, 178972, 223715, 264028, 300980, 330035, 357944, 447430, 528056, 601960, 660070, 894860, 1320140, 1789720, 2640280, 6666707, 13333414, 26666828, 33333535, 53333656, 66667070, 133334140, 266668280]

約数ペア:

[(1, 266668280), (2, 133334140), (4, 66667070), (5, 53333656), (8, 33333535), (10, 26666828), (20, 13333414), (40, 6666707), (101, 2640280), (149, 1789720), (202, 1320140), (298, 894860), (404, 660070), (443, 601960), (505, 528056), (596, 447430), (745, 357944), (808, 330035), (886, 300980), (1010, 264028), (1192, 223715), (1490, 178972), (1772, 150490), (2020, 132014), (2215, 120392), (2980, 89486), (3544, 75245), (4040, 66007), (4430, 60196), (5960, 44743), (8860, 30098), (15049, 17720)]