12817840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{487}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 34854912

約数和(自身を除く): 22037072

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 56, 70, 80, 94, 112, 140, 188, 235, 280, 329, 376, 470, 487, 560, 658, 752, 940, 974, 1316, 1645, 1880, 1948, 2435, 2632, 3290, 3409, 3760, 3896, 4870, 5264, 6580, 6818, 7792, 9740, 13160, 13636, 17045, 19480, 22889, 26320, 27272, 34090, 38960, 45778, 54544, 68180, 91556, 114445, 136360, 160223, 183112, 228890, 272720, 320446, 366224, 457780, 640892, 801115, 915560, 1281784, 1602230, 1831120, 2563568, 3204460, 6408920, 12817840]

約数ペア:

[(1, 12817840), (2, 6408920), (4, 3204460), (5, 2563568), (7, 1831120), (8, 1602230), (10, 1281784), (14, 915560), (16, 801115), (20, 640892), (28, 457780), (35, 366224), (40, 320446), (47, 272720), (56, 228890), (70, 183112), (80, 160223), (94, 136360), (112, 114445), (140, 91556), (188, 68180), (235, 54544), (280, 45778), (329, 38960), (376, 34090), (470, 27272), (487, 26320), (560, 22889), (658, 19480), (752, 17045), (940, 13636), (974, 13160), (1316, 9740), (1645, 7792), (1880, 6818), (1948, 6580), (2435, 5264), (2632, 4870), (3290, 3896), (3409, 3760)]