81554480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145633}}^1$

素因数の和:145653

約数の個数: 40

約数和(自身を含む): 216703392

約数和(自身を除く): 135148912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145633, 291266, 582532, 728165, 1019431, 1165064, 1456330, 2038862, 2330128, 2912660, 4077724, 5097155, 5825320, 8155448, 10194310, 11650640, 16310896, 20388620, 40777240, 81554480]

約数ペア:

[(1, 81554480), (2, 40777240), (4, 20388620), (5, 16310896), (7, 11650640), (8, 10194310), (10, 8155448), (14, 5825320), (16, 5097155), (20, 4077724), (28, 2912660), (35, 2330128), (40, 2038862), (56, 1456330), (70, 1165064), (80, 1019431), (112, 728165), (140, 582532), (280, 291266), (560, 145633)]