21281136

素因数分解:

$2^4\times 3^1\times {\mathrm{127}}^1\times {\mathrm{3491}}^1$

素因数の和:3629

約数の個数: 40

約数和(自身を含む): 55425024

約数和(自身を除く): 34143888

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 127, 254, 381, 508, 762, 1016, 1524, 2032, 3048, 3491, 6096, 6982, 10473, 13964, 20946, 27928, 41892, 55856, 83784, 167568, 443357, 886714, 1330071, 1773428, 2660142, 3546856, 5320284, 7093712, 10640568, 21281136]

約数ペア:

[(1, 21281136), (2, 10640568), (3, 7093712), (4, 5320284), (6, 3546856), (8, 2660142), (12, 1773428), (16, 1330071), (24, 886714), (48, 443357), (127, 167568), (254, 83784), (381, 55856), (508, 41892), (762, 27928), (1016, 20946), (1524, 13964), (2032, 10473), (3048, 6982), (3491, 6096)]