12821440

素因数分解:

$2^6\times 5^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:509

約数の個数: 56

約数和(自身を含む): 30906720

約数和(自身を除く): 18085280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 160, 206, 320, 389, 412, 515, 778, 824, 1030, 1556, 1648, 1945, 2060, 3112, 3296, 3890, 4120, 6224, 6592, 7780, 8240, 12448, 15560, 16480, 24896, 31120, 32960, 40067, 62240, 80134, 124480, 160268, 200335, 320536, 400670, 641072, 801340, 1282144, 1602680, 2564288, 3205360, 6410720, 12821440]

約数ペア:

[(1, 12821440), (2, 6410720), (4, 3205360), (5, 2564288), (8, 1602680), (10, 1282144), (16, 801340), (20, 641072), (32, 400670), (40, 320536), (64, 200335), (80, 160268), (103, 124480), (160, 80134), (206, 62240), (320, 40067), (389, 32960), (412, 31120), (515, 24896), (778, 16480), (824, 15560), (1030, 12448), (1556, 8240), (1648, 7780), (1945, 6592), (2060, 6224), (3112, 4120), (3296, 3890)]