19872657

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2089}}^1$

素因数の和:2253

約数の個数: 24

約数和(自身を含む): 33038720

約数和(自身を除く): 13166063

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 2089, 3171, 6267, 9513, 14623, 18801, 43869, 131607, 315439, 946317, 2208073, 2838951, 6624219, 19872657]

約数ペア:

[(1, 19872657), (3, 6624219), (7, 2838951), (9, 2208073), (21, 946317), (63, 315439), (151, 131607), (453, 43869), (1057, 18801), (1359, 14623), (2089, 9513), (3171, 6267)]