18890768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90821}}^1$

素因数の和:90842

約数の個数: 20

約数和(自身を含む): 39416748

約数和(自身を除く): 20525980

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90821, 181642, 363284, 726568, 1180673, 1453136, 2361346, 4722692, 9445384, 18890768]

約数ペア:

[(1, 18890768), (2, 9445384), (4, 4722692), (8, 2361346), (13, 1453136), (16, 1180673), (26, 726568), (52, 363284), (104, 181642), (208, 90821)]