21239955

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{14303}}^1$

素因数の和:14328

約数の個数: 32

約数和(自身を含む): 41195520

約数和(自身を除く): 19955565

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485, 14303, 42909, 71515, 128727, 157333, 214545, 386181, 471999, 643635, 786665, 1415997, 1930905, 2359995, 4247991, 7079985, 21239955]

約数ペア:

[(1, 21239955), (3, 7079985), (5, 4247991), (9, 2359995), (11, 1930905), (15, 1415997), (27, 786665), (33, 643635), (45, 471999), (55, 386181), (99, 214545), (135, 157333), (165, 128727), (297, 71515), (495, 42909), (1485, 14303)]