72781317

素因数分解:

$3^2\times 7^2\times {\mathrm{165037}}^1$

素因数の和:165057

約数の個数: 18

約数和(自身を含む): 122293158

約数和(自身を除く): 49511841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 165037, 495111, 1155259, 1485333, 3465777, 8086813, 10397331, 24260439, 72781317]

約数ペア:

[(1, 72781317), (3, 24260439), (7, 10397331), (9, 8086813), (21, 3465777), (49, 1485333), (63, 1155259), (147, 495111), (441, 165037)]