20771200

素因数分解:

$2^7\times 5^2\times {\mathrm{6491}}^1$

素因数の和:6515

約数の個数: 48

約数和(自身を含む): 51319260

約数和(自身を除く): 30548060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6491, 12982, 25964, 32455, 51928, 64910, 103856, 129820, 162275, 207712, 259640, 324550, 415424, 519280, 649100, 830848, 1038560, 1298200, 2077120, 2596400, 4154240, 5192800, 10385600, 20771200]

約数ペア:

[(1, 20771200), (2, 10385600), (4, 5192800), (5, 4154240), (8, 2596400), (10, 2077120), (16, 1298200), (20, 1038560), (25, 830848), (32, 649100), (40, 519280), (50, 415424), (64, 324550), (80, 259640), (100, 207712), (128, 162275), (160, 129820), (200, 103856), (320, 64910), (400, 51928), (640, 32455), (800, 25964), (1600, 12982), (3200, 6491)]