257532080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{13033}}^1$

素因数の和:13078

約数の個数: 80

約数和(自身を含む): 678810720

約数和(自身を除く): 421278640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 13033, 19760, 26066, 52132, 65165, 104264, 130330, 169429, 208528, 247627, 260660, 338858, 495254, 521320, 677716, 847145, 990508, 1042640, 1238135, 1355432, 1694290, 1981016, 2476270, 2710864, 3219151, 3388580, 3962032, 4952540, 6438302, 6777160, 9905080, 12876604, 13554320, 16095755, 19810160, 25753208, 32191510, 51506416, 64383020, 128766040, 257532080]

約数ペア:

[(1, 257532080), (2, 128766040), (4, 64383020), (5, 51506416), (8, 32191510), (10, 25753208), (13, 19810160), (16, 16095755), (19, 13554320), (20, 12876604), (26, 9905080), (38, 6777160), (40, 6438302), (52, 4952540), (65, 3962032), (76, 3388580), (80, 3219151), (95, 2710864), (104, 2476270), (130, 1981016), (152, 1694290), (190, 1355432), (208, 1238135), (247, 1042640), (260, 990508), (304, 847145), (380, 677716), (494, 521320), (520, 495254), (760, 338858), (988, 260660), (1040, 247627), (1235, 208528), (1520, 169429), (1976, 130330), (2470, 104264), (3952, 65165), (4940, 52132), (9880, 26066), (13033, 19760)]