20530881

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4723}}^1$

素因数の和:4762

約数の個数: 32

約数和(自身を含む): 36280320

約数和(自身を除く): 15749439

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 4723, 14169, 33061, 42507, 99183, 108629, 127521, 297549, 325887, 760403, 892647, 977661, 2281209, 2932983, 6843627, 20530881]

約数ペア:

[(1, 20530881), (3, 6843627), (7, 2932983), (9, 2281209), (21, 977661), (23, 892647), (27, 760403), (63, 325887), (69, 297549), (161, 127521), (189, 108629), (207, 99183), (483, 42507), (621, 33061), (1449, 14169), (4347, 4723)]