21203343

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2609}}^1$

素因数の和:2668

約数の個数: 32

約数和(自身を含む): 36748800

約数和(自身を除く): 15545457

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2609, 2709, 7827, 8127, 18263, 23481, 54789, 70443, 112187, 164367, 336561, 493101, 785309, 1009683, 2355927, 3029049, 7067781, 21203343]

約数ペア:

[(1, 21203343), (3, 7067781), (7, 3029049), (9, 2355927), (21, 1009683), (27, 785309), (43, 493101), (63, 336561), (129, 164367), (189, 112187), (301, 70443), (387, 54789), (903, 23481), (1161, 18263), (2609, 8127), (2709, 7827)]