81604480

素因数分解:

$2^7\times 5^1\times {\mathrm{127507}}^1$

素因数の和:127526

約数の個数: 32

約数和(自身を含む): 195087240

約数和(自身を除く): 113482760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127507, 255014, 510028, 637535, 1020056, 1275070, 2040112, 2550140, 4080224, 5100280, 8160448, 10200560, 16320896, 20401120, 40802240, 81604480]

約数ペア:

[(1, 81604480), (2, 40802240), (4, 20401120), (5, 16320896), (8, 10200560), (10, 8160448), (16, 5100280), (20, 4080224), (32, 2550140), (40, 2040112), (64, 1275070), (80, 1020056), (128, 637535), (160, 510028), (320, 255014), (640, 127507)]