21153280

素因数分解:

$2^9\times 5^1\times {\mathrm{8263}}^1$

素因数の和:8286

約数の個数: 40

約数和(自身を含む): 50724432

約数和(自身を除く): 29571152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8263, 16526, 33052, 41315, 66104, 82630, 132208, 165260, 264416, 330520, 528832, 661040, 1057664, 1322080, 2115328, 2644160, 4230656, 5288320, 10576640, 21153280]

約数ペア:

[(1, 21153280), (2, 10576640), (4, 5288320), (5, 4230656), (8, 2644160), (10, 2115328), (16, 1322080), (20, 1057664), (32, 661040), (40, 528832), (64, 330520), (80, 264416), (128, 165260), (160, 132208), (256, 82630), (320, 66104), (512, 41315), (640, 33052), (1280, 16526), (2560, 8263)]