20546560

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4013}}^1$

素因数の和:4038

約数の個数: 44

約数和(自身を含む): 49299948

約数和(自身を除く): 28753388

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4013, 5120, 8026, 16052, 20065, 32104, 40130, 64208, 80260, 128416, 160520, 256832, 321040, 513664, 642080, 1027328, 1284160, 2054656, 2568320, 4109312, 5136640, 10273280, 20546560]

約数ペア:

[(1, 20546560), (2, 10273280), (4, 5136640), (5, 4109312), (8, 2568320), (10, 2054656), (16, 1284160), (20, 1027328), (32, 642080), (40, 513664), (64, 321040), (80, 256832), (128, 160520), (160, 128416), (256, 80260), (320, 64208), (512, 40130), (640, 32104), (1024, 20065), (1280, 16052), (2560, 8026), (4013, 5120)]