1780947

素因数分解:

$3^6\times 7^1\times {\mathrm{349}}^1$

素因数の和:374

約数の個数: 28

約数和(自身を含む): 3060400

約数和(自身を除く): 1279453

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 349, 567, 729, 1047, 1701, 2443, 3141, 5103, 7329, 9423, 21987, 28269, 65961, 84807, 197883, 254421, 593649, 1780947]

約数ペア:

[(1, 1780947), (3, 593649), (7, 254421), (9, 197883), (21, 84807), (27, 65961), (63, 28269), (81, 21987), (189, 9423), (243, 7329), (349, 5103), (567, 3141), (729, 2443), (1047, 1701)]