18680452020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{246509}}^1$

素因数の和:246945

約数の個数: 72

約数和(自身を含む): 56798862120

約数和(自身を除く): 38118410100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 1263, 1684, 2105, 2526, 3789, 4210, 5052, 6315, 7578, 8420, 12630, 15156, 18945, 25260, 37890, 75780, 246509, 493018, 739527, 986036, 1232545, 1479054, 2218581, 2465090, 2958108, 3697635, 4437162, 4930180, 7395270, 8874324, 11092905, 14790540, 22185810, 44371620, 103780289, 207560578, 311340867, 415121156, 518901445, 622681734, 934022601, 1037802890, 1245363468, 1556704335, 1868045202, 2075605780, 3113408670, 3736090404, 4670113005, 6226817340, 9340226010, 18680452020]

約数ペア:

[(1, 18680452020), (2, 9340226010), (3, 6226817340), (4, 4670113005), (5, 3736090404), (6, 3113408670), (9, 2075605780), (10, 1868045202), (12, 1556704335), (15, 1245363468), (18, 1037802890), (20, 934022601), (30, 622681734), (36, 518901445), (45, 415121156), (60, 311340867), (90, 207560578), (180, 103780289), (421, 44371620), (842, 22185810), (1263, 14790540), (1684, 11092905), (2105, 8874324), (2526, 7395270), (3789, 4930180), (4210, 4437162), (5052, 3697635), (6315, 2958108), (7578, 2465090), (8420, 2218581), (12630, 1479054), (15156, 1232545), (18945, 986036), (25260, 739527), (37890, 493018), (75780, 246509)]