21158838

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27337}}^1$

素因数の和:27388

約数の個数: 24

約数和(自身を含む): 46912008

約数和(自身を除く): 25753170

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27337, 54674, 82011, 164022, 246033, 492066, 1175491, 2350982, 3526473, 7052946, 10579419, 21158838]

約数ペア:

[(1, 21158838), (2, 10579419), (3, 7052946), (6, 3526473), (9, 2350982), (18, 1175491), (43, 492066), (86, 246033), (129, 164022), (258, 82011), (387, 54674), (774, 27337)]