20680801280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4039219}}^1$

素因数の和:4039244

約数の個数: 44

約数和(自身を含む): 49609700040

約数和(自身を除く): 28928898760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 4039219, 8078438, 16156876, 20196095, 32313752, 40392190, 64627504, 80784380, 129255008, 161568760, 258510016, 323137520, 517020032, 646275040, 1034040064, 1292550080, 2068080128, 2585100160, 4136160256, 5170200320, 10340400640, 20680801280]

約数ペア:

[(1, 20680801280), (2, 10340400640), (4, 5170200320), (5, 4136160256), (8, 2585100160), (10, 2068080128), (16, 1292550080), (20, 1034040064), (32, 646275040), (40, 517020032), (64, 323137520), (80, 258510016), (128, 161568760), (160, 129255008), (256, 80784380), (320, 64627504), (512, 40392190), (640, 32313752), (1024, 20196095), (1280, 16156876), (2560, 8078438), (5120, 4039219)]