20512238481

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{290447}}^1$

素因数の和:290538

約数の個数: 48

約数和(自身を含む): 36247910400

約数和(自身を除く): 15735671919

約数列:

[1, 3, 7, 9, 19, 21, 57, 59, 63, 133, 171, 177, 399, 413, 531, 1121, 1197, 1239, 3363, 3717, 7847, 10089, 23541, 70623, 290447, 871341, 2033129, 2614023, 5518493, 6099387, 16555479, 17136373, 18298161, 38629451, 49666437, 51409119, 115888353, 119954611, 154227357, 325591087, 347665059, 359863833, 976773261, 1079591499, 2279137609, 2930319783, 6837412827, 20512238481]

約数ペア:

[(1, 20512238481), (3, 6837412827), (7, 2930319783), (9, 2279137609), (19, 1079591499), (21, 976773261), (57, 359863833), (59, 347665059), (63, 325591087), (133, 154227357), (171, 119954611), (177, 115888353), (399, 51409119), (413, 49666437), (531, 38629451), (1121, 18298161), (1197, 17136373), (1239, 16555479), (3363, 6099387), (3717, 5518493), (7847, 2614023), (10089, 2033129), (23541, 871341), (70623, 290447)]