28721259

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{7727}}^1$

素因数の和:7799

約数の個数: 24

約数和(自身を含む): 48222720

約数和(自身を除く): 19501461

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 7727, 23181, 54089, 69543, 162267, 455893, 486801, 1367679, 3191251, 4103037, 9573753, 28721259]

約数ペア:

[(1, 28721259), (3, 9573753), (7, 4103037), (9, 3191251), (21, 1367679), (59, 486801), (63, 455893), (177, 162267), (413, 69543), (531, 54089), (1239, 23181), (3717, 7727)]