31213539

素因数分解:

$3^3\times 7^2\times {\mathrm{23593}}^1$

素因数の和:23616

約数の個数: 24

約数和(自身を含む): 53794320

約数和(自身を除く): 22580781

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 23593, 70779, 165151, 212337, 495453, 637011, 1156057, 1486359, 3468171, 4459077, 10404513, 31213539]

約数ペア:

[(1, 31213539), (3, 10404513), (7, 4459077), (9, 3468171), (21, 1486359), (27, 1156057), (49, 637011), (63, 495453), (147, 212337), (189, 165151), (441, 70779), (1323, 23593)]