20540390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{158003}}^1$

素因数の和:158023

約数の個数: 16

約数和(自身を含む): 39817008

約数和(自身を除く): 19276618

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 158003, 316006, 790015, 1580030, 2054039, 4108078, 10270195, 20540390]

約数ペア:

[(1, 20540390), (2, 10270195), (5, 4108078), (10, 2054039), (13, 1580030), (26, 790015), (65, 316006), (130, 158003)]