128706560

素因数分解:

$2^{11}\times 5^1\times {\mathrm{12569}}^1$

素因数の和:12596

約数の個数: 48

約数和(自身を含む): 308844900

約数和(自身を除く): 180138340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240, 12569, 25138, 50276, 62845, 100552, 125690, 201104, 251380, 402208, 502760, 804416, 1005520, 1608832, 2011040, 3217664, 4022080, 6435328, 8044160, 12870656, 16088320, 25741312, 32176640, 64353280, 128706560]

約数ペア:

[(1, 128706560), (2, 64353280), (4, 32176640), (5, 25741312), (8, 16088320), (10, 12870656), (16, 8044160), (20, 6435328), (32, 4022080), (40, 3217664), (64, 2011040), (80, 1608832), (128, 1005520), (160, 804416), (256, 502760), (320, 402208), (512, 251380), (640, 201104), (1024, 125690), (1280, 100552), (2048, 62845), (2560, 50276), (5120, 25138), (10240, 12569)]