21800960

素因数分解:

$2^{11}\times 5^1\times {\mathrm{2129}}^1$

素因数の和:2156

約数の個数: 48

約数和(自身を含む): 52334100

約数和(自身を除く): 30533140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2129, 2560, 4258, 5120, 8516, 10240, 10645, 17032, 21290, 34064, 42580, 68128, 85160, 136256, 170320, 272512, 340640, 545024, 681280, 1090048, 1362560, 2180096, 2725120, 4360192, 5450240, 10900480, 21800960]

約数ペア:

[(1, 21800960), (2, 10900480), (4, 5450240), (5, 4360192), (8, 2725120), (10, 2180096), (16, 1362560), (20, 1090048), (32, 681280), (40, 545024), (64, 340640), (80, 272512), (128, 170320), (160, 136256), (256, 85160), (320, 68128), (512, 42580), (640, 34064), (1024, 21290), (1280, 17032), (2048, 10645), (2129, 10240), (2560, 8516), (4258, 5120)]