12420765

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 25822368

約数和(自身を除く): 13401603

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 49, 63, 105, 129, 131, 147, 215, 245, 301, 315, 387, 393, 441, 645, 655, 735, 903, 917, 1179, 1505, 1935, 1965, 2107, 2205, 2709, 2751, 4515, 4585, 5633, 5895, 6321, 6419, 8253, 10535, 13545, 13755, 16899, 18963, 19257, 28165, 31605, 32095, 39431, 41265, 50697, 57771, 84495, 94815, 96285, 118293, 197155, 253485, 276017, 288855, 354879, 591465, 828051, 1380085, 1774395, 2484153, 4140255, 12420765]

約数ペア:

[(1, 12420765), (3, 4140255), (5, 2484153), (7, 1774395), (9, 1380085), (15, 828051), (21, 591465), (35, 354879), (43, 288855), (45, 276017), (49, 253485), (63, 197155), (105, 118293), (129, 96285), (131, 94815), (147, 84495), (215, 57771), (245, 50697), (301, 41265), (315, 39431), (387, 32095), (393, 31605), (441, 28165), (645, 19257), (655, 18963), (735, 16899), (903, 13755), (917, 13545), (1179, 10535), (1505, 8253), (1935, 6419), (1965, 6321), (2107, 5895), (2205, 5633), (2709, 4585), (2751, 4515)]