178766217

素因数分解:

$3^3\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1471}}^1$

素因数の和:2130

約数の個数: 32

約数和(自身を含む): 303349760

約数和(自身を除く): 124583543

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 643, 1471, 1929, 4413, 4501, 5787, 10297, 13239, 13503, 17361, 30891, 39717, 40509, 92673, 121527, 278019, 945853, 2837559, 6620971, 8512677, 19862913, 25538031, 59588739, 178766217]

約数ペア:

[(1, 178766217), (3, 59588739), (7, 25538031), (9, 19862913), (21, 8512677), (27, 6620971), (63, 2837559), (189, 945853), (643, 278019), (1471, 121527), (1929, 92673), (4413, 40509), (4501, 39717), (5787, 30891), (10297, 17361), (13239, 13503)]