21440133

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 37791936

約数和(自身を除く): 16351803

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 81, 99, 117, 143, 243, 297, 351, 429, 617, 891, 1053, 1287, 1851, 2673, 3159, 3861, 5553, 6787, 8021, 11583, 16659, 20361, 24063, 34749, 49977, 61083, 72189, 88231, 149931, 183249, 216567, 264693, 549747, 649701, 794079, 1649241, 1949103, 2382237, 7146711, 21440133]

約数ペア:

[(1, 21440133), (3, 7146711), (9, 2382237), (11, 1949103), (13, 1649241), (27, 794079), (33, 649701), (39, 549747), (81, 264693), (99, 216567), (117, 183249), (143, 149931), (243, 88231), (297, 72189), (351, 61083), (429, 49977), (617, 34749), (891, 24063), (1053, 20361), (1287, 16659), (1851, 11583), (2673, 8021), (3159, 6787), (3861, 5553)]