21211509

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{5897}}^1$

素因数の和:6020

約数の個数: 16

約数和(自身を含む): 31141440

約数和(自身を除く): 9929931

約数列:

[1, 3, 11, 33, 109, 327, 1199, 3597, 5897, 17691, 64867, 194601, 642773, 1928319, 7070503, 21211509]

約数ペア:

[(1, 21211509), (3, 7070503), (11, 1928319), (33, 642773), (109, 194601), (327, 64867), (1199, 17691), (3597, 5897)]