20505978

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3527}}^1$

素因数の和:3571

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 29027142

約数列:

[1, 2, 3, 6, 9, 17, 18, 19, 34, 38, 51, 57, 102, 114, 153, 171, 306, 323, 342, 646, 969, 1938, 2907, 3527, 5814, 7054, 10581, 21162, 31743, 59959, 63486, 67013, 119918, 134026, 179877, 201039, 359754, 402078, 539631, 603117, 1079262, 1139221, 1206234, 2278442, 3417663, 6835326, 10252989, 20505978]

約数ペア:

[(1, 20505978), (2, 10252989), (3, 6835326), (6, 3417663), (9, 2278442), (17, 1206234), (18, 1139221), (19, 1079262), (34, 603117), (38, 539631), (51, 402078), (57, 359754), (102, 201039), (114, 179877), (153, 134026), (171, 119918), (306, 67013), (323, 63486), (342, 59959), (646, 31743), (969, 21162), (1938, 10581), (2907, 7054), (3527, 5814)]