20697728

素因数分解:

$2^7\times {\mathrm{101}}^1\times {\mathrm{1601}}^1$

素因数の和:1716

約数の個数: 32

約数和(自身を含む): 41668020

約数和(自身を除く): 20970292

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 404, 808, 1601, 1616, 3202, 3232, 6404, 6464, 12808, 12928, 25616, 51232, 102464, 161701, 204928, 323402, 646804, 1293608, 2587216, 5174432, 10348864, 20697728]

約数ペア:

[(1, 20697728), (2, 10348864), (4, 5174432), (8, 2587216), (16, 1293608), (32, 646804), (64, 323402), (101, 204928), (128, 161701), (202, 102464), (404, 51232), (808, 25616), (1601, 12928), (1616, 12808), (3202, 6464), (3232, 6404)]