21250797

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9853203

約数列:

[1, 3, 19, 57, 59, 71, 89, 177, 213, 267, 1121, 1349, 1691, 3363, 4047, 4189, 5073, 5251, 6319, 12567, 15753, 18957, 79591, 99769, 120061, 238773, 299307, 360183, 372821, 1118463, 7083599, 21250797]

約数ペア:

[(1, 21250797), (3, 7083599), (19, 1118463), (57, 372821), (59, 360183), (71, 299307), (89, 238773), (177, 120061), (213, 99769), (267, 79591), (1121, 18957), (1349, 15753), (1691, 12567), (3363, 6319), (4047, 5251), (4189, 5073)]