19940661

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{653}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 33236280

約数和(自身を除く): 13295619

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 653, 783, 1053, 1131, 1959, 2349, 3393, 5877, 8489, 10179, 17631, 18937, 25467, 30537, 52893, 56811, 76401, 170433, 229203, 246181, 511299, 687609, 738543, 1533897, 2215629, 6646887, 19940661]

約数ペア:

[(1, 19940661), (3, 6646887), (9, 2215629), (13, 1533897), (27, 738543), (29, 687609), (39, 511299), (81, 246181), (87, 229203), (117, 170433), (261, 76401), (351, 56811), (377, 52893), (653, 30537), (783, 25467), (1053, 18937), (1131, 17631), (1959, 10179), (2349, 8489), (3393, 5877)]