21287961

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2441}}^1$

素因数の和:2486

約数の個数: 32

約数和(自身を含む): 35164800

約数和(自身を除く): 13876839

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 153, 171, 323, 459, 513, 969, 2441, 2907, 7323, 8721, 21969, 41497, 46379, 65907, 124491, 139137, 373473, 417411, 788443, 1120419, 1252233, 2365329, 7095987, 21287961]

約数ペア:

[(1, 21287961), (3, 7095987), (9, 2365329), (17, 1252233), (19, 1120419), (27, 788443), (51, 417411), (57, 373473), (153, 139137), (171, 124491), (323, 65907), (459, 46379), (513, 41497), (969, 21969), (2441, 8721), (2907, 7323)]