12390440

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1973}}^1$

素因数の和:2141

約数の個数: 32

約数和(自身を含む): 28070280

約数和(自身を除く): 15679840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 1973, 3140, 3946, 6280, 7892, 9865, 15784, 19730, 39460, 78920, 309761, 619522, 1239044, 1548805, 2478088, 3097610, 6195220, 12390440]

約数ペア:

[(1, 12390440), (2, 6195220), (4, 3097610), (5, 2478088), (8, 1548805), (10, 1239044), (20, 619522), (40, 309761), (157, 78920), (314, 39460), (628, 19730), (785, 15784), (1256, 9865), (1570, 7892), (1973, 6280), (3140, 3946)]