681777

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{443}}^1$

素因数の和:474

約数の個数: 20

約数和(自身を含む): 1074480

約数和(自身を除く): 392703

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 443, 513, 1329, 1539, 3987, 8417, 11961, 25251, 35883, 75753, 227259, 681777]

約数ペア:

[(1, 681777), (3, 227259), (9, 75753), (19, 35883), (27, 25251), (57, 11961), (81, 8417), (171, 3987), (443, 1539), (513, 1329)]