21238431

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{2699}}^1$

素因数の和:2806

約数の個数: 16

約数和(自身を含む): 29462400

約数和(自身を除く): 8223969

約数列:

[1, 3, 43, 61, 129, 183, 2623, 2699, 7869, 8097, 116057, 164639, 348171, 493917, 7079477, 21238431]

約数ペア:

[(1, 21238431), (3, 7079477), (43, 493917), (61, 348171), (129, 164639), (183, 116057), (2623, 8097), (2699, 7869)]