21192543

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:516

約数の個数: 32

約数和(自身を含む): 33440000

約数和(自身を除く): 12247457

約数列:

[1, 3, 9, 19, 27, 57, 109, 171, 327, 379, 513, 981, 1137, 2071, 2943, 3411, 6213, 7201, 10233, 18639, 21603, 41311, 55917, 64809, 123933, 194427, 371799, 784909, 1115397, 2354727, 7064181, 21192543]

約数ペア:

[(1, 21192543), (3, 7064181), (9, 2354727), (19, 1115397), (27, 784909), (57, 371799), (109, 194427), (171, 123933), (327, 64809), (379, 55917), (513, 41311), (981, 21603), (1137, 18639), (2071, 10233), (2943, 7201), (3411, 6213)]