21284565

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{11173}}^1$

素因数の和:11308

約数の個数: 16

約数和(自身を含む): 34326528

約数和(自身を除く): 13041963

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 11173, 33519, 55865, 167595, 1418971, 4256913, 7094855, 21284565]

約数ペア:

[(1, 21284565), (3, 7094855), (5, 4256913), (15, 1418971), (127, 167595), (381, 55865), (635, 33519), (1905, 11173)]