12872800

素因数分解:

$2^5\times 5^2\times {\mathrm{16091}}^1$

素因数の和:16111

約数の個数: 36

約数和(自身を含む): 31427676

約数和(自身を除く): 18554876

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 16091, 32182, 64364, 80455, 128728, 160910, 257456, 321820, 402275, 514912, 643640, 804550, 1287280, 1609100, 2574560, 3218200, 6436400, 12872800]

約数ペア:

[(1, 12872800), (2, 6436400), (4, 3218200), (5, 2574560), (8, 1609100), (10, 1287280), (16, 804550), (20, 643640), (25, 514912), (32, 402275), (40, 321820), (50, 257456), (80, 160910), (100, 128728), (160, 80455), (200, 64364), (400, 32182), (800, 16091)]