21316827

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 36122112

約数和(自身を除く): 14805285

約数列:

[1, 3, 7, 17, 21, 29, 51, 71, 87, 119, 203, 213, 357, 493, 497, 609, 841, 1207, 1479, 1491, 2059, 2523, 3451, 3621, 5887, 6177, 8449, 10353, 14297, 14413, 17661, 25347, 35003, 42891, 43239, 59711, 100079, 105009, 179133, 245021, 300237, 417977, 735063, 1015087, 1253931, 3045261, 7105609, 21316827]

約数ペア:

[(1, 21316827), (3, 7105609), (7, 3045261), (17, 1253931), (21, 1015087), (29, 735063), (51, 417977), (71, 300237), (87, 245021), (119, 179133), (203, 105009), (213, 100079), (357, 59711), (493, 43239), (497, 42891), (609, 35003), (841, 25347), (1207, 17661), (1479, 14413), (1491, 14297), (2059, 10353), (2523, 8449), (3451, 6177), (3621, 5887)]