21006339

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1\times {\mathrm{1187}}^1$

素因数の和:1554

約数の個数: 16

約数和(自身を含む): 29766528

約数和(自身を除く): 8760189

約数列:

[1, 3, 17, 51, 347, 1041, 1187, 3561, 5899, 17697, 20179, 60537, 411889, 1235667, 7002113, 21006339]

約数ペア:

[(1, 21006339), (3, 7002113), (17, 1235667), (51, 411889), (347, 60537), (1041, 20179), (1187, 17697), (3561, 5899)]