18723536

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90017}}^1$

素因数の和:90038

約数の個数: 20

約数和(自身を含む): 39067812

約数和(自身を除く): 20344276

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90017, 180034, 360068, 720136, 1170221, 1440272, 2340442, 4680884, 9361768, 18723536]

約数ペア:

[(1, 18723536), (2, 9361768), (4, 4680884), (8, 2340442), (13, 1440272), (16, 1170221), (26, 720136), (52, 360068), (104, 180034), (208, 90017)]