20741120

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4051}}^1$

素因数の和:4076

約数の個数: 44

約数和(自身を含む): 49766664

約数和(自身を除く): 29025544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4051, 5120, 8102, 16204, 20255, 32408, 40510, 64816, 81020, 129632, 162040, 259264, 324080, 518528, 648160, 1037056, 1296320, 2074112, 2592640, 4148224, 5185280, 10370560, 20741120]

約数ペア:

[(1, 20741120), (2, 10370560), (4, 5185280), (5, 4148224), (8, 2592640), (10, 2074112), (16, 1296320), (20, 1037056), (32, 648160), (40, 518528), (64, 324080), (80, 259264), (128, 162040), (160, 129632), (256, 81020), (320, 64816), (512, 40510), (640, 32408), (1024, 20255), (1280, 16204), (2560, 8102), (4051, 5120)]