20989452

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{8369}}^1$

素因数の和:8406

約数の個数: 48

約数和(自身を含む): 56246400

約数和(自身を除く): 35256948

約数列:

[1, 2, 3, 4, 6, 11, 12, 19, 22, 33, 38, 44, 57, 66, 76, 114, 132, 209, 228, 418, 627, 836, 1254, 2508, 8369, 16738, 25107, 33476, 50214, 92059, 100428, 159011, 184118, 276177, 318022, 368236, 477033, 552354, 636044, 954066, 1104708, 1749121, 1908132, 3498242, 5247363, 6996484, 10494726, 20989452]

約数ペア:

[(1, 20989452), (2, 10494726), (3, 6996484), (4, 5247363), (6, 3498242), (11, 1908132), (12, 1749121), (19, 1104708), (22, 954066), (33, 636044), (38, 552354), (44, 477033), (57, 368236), (66, 318022), (76, 276177), (114, 184118), (132, 159011), (209, 100428), (228, 92059), (418, 50214), (627, 33476), (836, 25107), (1254, 16738), (2508, 8369)]