21239421

素因数分解:

$3^1\times 7^1\times {\mathrm{587}}^1\times {\mathrm{1723}}^1$

素因数の和:2320

約数の個数: 16

約数和(自身を含む): 32438784

約数和(自身を除く): 11199363

約数列:

[1, 3, 7, 21, 587, 1723, 1761, 4109, 5169, 12061, 12327, 36183, 1011401, 3034203, 7079807, 21239421]

約数ペア:

[(1, 21239421), (3, 7079807), (7, 3034203), (21, 1011401), (587, 36183), (1723, 12327), (1761, 12061), (4109, 5169)]