20454764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7621}}^1$

素因数の和:7697

約数の個数: 24

約数和(自身を含む): 39695376

約数和(自身を除く): 19240612

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7621, 15242, 30484, 83831, 167662, 335324, 464881, 929762, 1859524, 5113691, 10227382, 20454764]

約数ペア:

[(1, 20454764), (2, 10227382), (4, 5113691), (11, 1859524), (22, 929762), (44, 464881), (61, 335324), (122, 167662), (244, 83831), (671, 30484), (1342, 15242), (2684, 7621)]