20495223

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3221}}^1$

素因数の和:3335

約数の個数: 24

約数和(自身を含む): 34178976

約数和(自身を除く): 13683753

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 3221, 6363, 9663, 22547, 28989, 67641, 202923, 325321, 975963, 2277247, 2927889, 6831741, 20495223]

約数ペア:

[(1, 20495223), (3, 6831741), (7, 2927889), (9, 2277247), (21, 975963), (63, 325321), (101, 202923), (303, 67641), (707, 28989), (909, 22547), (2121, 9663), (3221, 6363)]