20903148

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{761}}^1$

素因数の和:887

約数の個数: 72

約数和(自身を含む): 61020960

約数和(自身を除く): 40117812

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 109, 126, 218, 252, 327, 436, 654, 761, 763, 981, 1308, 1522, 1526, 1962, 2283, 2289, 3044, 3052, 3924, 4566, 4578, 5327, 6849, 6867, 9132, 9156, 10654, 13698, 13734, 15981, 21308, 27396, 27468, 31962, 47943, 63924, 82949, 95886, 165898, 191772, 248847, 331796, 497694, 580643, 746541, 995388, 1161286, 1493082, 1741929, 2322572, 2986164, 3483858, 5225787, 6967716, 10451574, 20903148]

約数ペア:

[(1, 20903148), (2, 10451574), (3, 6967716), (4, 5225787), (6, 3483858), (7, 2986164), (9, 2322572), (12, 1741929), (14, 1493082), (18, 1161286), (21, 995388), (28, 746541), (36, 580643), (42, 497694), (63, 331796), (84, 248847), (109, 191772), (126, 165898), (218, 95886), (252, 82949), (327, 63924), (436, 47943), (654, 31962), (761, 27468), (763, 27396), (981, 21308), (1308, 15981), (1522, 13734), (1526, 13698), (1962, 10654), (2283, 9156), (2289, 9132), (3044, 6867), (3052, 6849), (3924, 5327), (4566, 4578)]