20776791

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12285609

約数列:

[1, 3, 7, 21, 41, 59, 123, 177, 287, 409, 413, 861, 1227, 1239, 2419, 2863, 7257, 8589, 16769, 16933, 24131, 50307, 50799, 72393, 117383, 168917, 352149, 506751, 989371, 2968113, 6925597, 20776791]

約数ペア:

[(1, 20776791), (3, 6925597), (7, 2968113), (21, 989371), (41, 506751), (59, 352149), (123, 168917), (177, 117383), (287, 72393), (409, 50799), (413, 50307), (861, 24131), (1227, 16933), (1239, 16769), (2419, 8589), (2863, 7257)]