21298161

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 31961088

約数和(自身を除く): 10662927

約数列:

[1, 3, 17, 23, 51, 67, 69, 201, 271, 391, 813, 1139, 1173, 1541, 3417, 4607, 4623, 6233, 13821, 18157, 18699, 26197, 54471, 78591, 105961, 308669, 317883, 417611, 926007, 1252833, 7099387, 21298161]

約数ペア:

[(1, 21298161), (3, 7099387), (17, 1252833), (23, 926007), (51, 417611), (67, 317883), (69, 308669), (201, 105961), (271, 78591), (391, 54471), (813, 26197), (1139, 18699), (1173, 18157), (1541, 13821), (3417, 6233), (4607, 4623)]