2981601

素因数分解:

$3^2\times 7^2\times {\mathrm{6761}}^1$

素因数の和:6781

約数の個数: 18

約数和(自身を含む): 5010642

約数和(自身を除く): 2029041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 6761, 20283, 47327, 60849, 141981, 331289, 425943, 993867, 2981601]

約数ペア:

[(1, 2981601), (3, 993867), (7, 425943), (9, 331289), (21, 141981), (49, 60849), (63, 47327), (147, 20283), (441, 6761)]