256853.0000000

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 15952640

約数和(自身を除く): 7086461

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 823, 1197, 1539, 2469, 3591, 5761, 7407, 10773, 15637, 17283, 22221, 46911, 51849, 66663, 109459, 140733, 155547, 328377, 422199, 466641, 985131, 1266597, 2955393, 8866179]

約数ペア:

[(1, 8866179), (3, 2955393), (7, 1266597), (9, 985131), (19, 466641), (21, 422199), (27, 328377), (57, 155547), (63, 140733), (81, 109459), (133, 66663), (171, 51849), (189, 46911), (399, 22221), (513, 17283), (567, 15637), (823, 10773), (1197, 7407), (1539, 5761), (2469, 3591)]