20421136

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{2267}}^1$

素因数の和:2838

約数の個数: 20

約数和(自身を含む): 39653712

約数和(自身を除く): 19232576

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 2267, 4504, 4534, 9008, 9068, 18136, 36272, 1276321, 2552642, 5105284, 10210568, 20421136]

約数ペア:

[(1, 20421136), (2, 10210568), (4, 5105284), (8, 2552642), (16, 1276321), (563, 36272), (1126, 18136), (2252, 9068), (2267, 9008), (4504, 4534)]