21616803

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 36429120

約数和(自身を除く): 14812317

約数列:

[1, 3, 9, 13, 23, 29, 39, 69, 87, 117, 207, 261, 277, 299, 377, 667, 831, 897, 1131, 2001, 2493, 2691, 3393, 3601, 6003, 6371, 8033, 8671, 10803, 19113, 24099, 26013, 32409, 57339, 72297, 78039, 82823, 104429, 184759, 248469, 313287, 554277, 745407, 939861, 1662831, 2401867, 7205601, 21616803]

約数ペア:

[(1, 21616803), (3, 7205601), (9, 2401867), (13, 1662831), (23, 939861), (29, 745407), (39, 554277), (69, 313287), (87, 248469), (117, 184759), (207, 104429), (261, 82823), (277, 78039), (299, 72297), (377, 57339), (667, 32409), (831, 26013), (897, 24099), (1131, 19113), (2001, 10803), (2493, 8671), (2691, 8033), (3393, 6371), (3601, 6003)]