16987821

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{571}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 23282688

約数和(自身を除く): 6294867

約数列:

[1, 3, 47, 141, 211, 571, 633, 1713, 9917, 26837, 29751, 80511, 120481, 361443, 5662607, 16987821]

約数ペア:

[(1, 16987821), (3, 5662607), (47, 361443), (141, 120481), (211, 80511), (571, 29751), (633, 26837), (1713, 9917)]