20816572

素因数分解:

$2^2\times 7^2\times {\mathrm{106207}}^1$

素因数の和:106225

約数の個数: 18

約数和(自身を含む): 42376992

約数和(自身を除く): 21560420

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 106207, 212414, 424828, 743449, 1486898, 2973796, 5204143, 10408286, 20816572]

約数ペア:

[(1, 20816572), (2, 10408286), (4, 5204143), (7, 2973796), (14, 1486898), (28, 743449), (49, 424828), (98, 212414), (196, 106207)]