21755783

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{743}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 25712640

約数和(自身を除く): 3956857

約数列:

[1, 7, 47, 89, 329, 623, 743, 4183, 5201, 29281, 34921, 66127, 244447, 462889, 3107969, 21755783]

約数ペア:

[(1, 21755783), (7, 3107969), (47, 462889), (89, 244447), (329, 66127), (623, 34921), (743, 29281), (4183, 5201)]