20719413

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 37267776

約数和(自身を除く): 16548363

約数列:

[1, 3, 9, 11, 13, 17, 33, 39, 51, 99, 117, 143, 153, 187, 221, 429, 561, 663, 947, 1287, 1683, 1989, 2431, 2841, 7293, 8523, 10417, 12311, 16099, 21879, 31251, 36933, 48297, 93753, 110799, 135421, 144891, 177089, 209287, 406263, 531267, 627861, 1218789, 1593801, 1883583, 2302157, 6906471, 20719413]

約数ペア:

[(1, 20719413), (3, 6906471), (9, 2302157), (11, 1883583), (13, 1593801), (17, 1218789), (33, 627861), (39, 531267), (51, 406263), (99, 209287), (117, 177089), (143, 144891), (153, 135421), (187, 110799), (221, 93753), (429, 48297), (561, 36933), (663, 31251), (947, 21879), (1287, 16099), (1683, 12311), (1989, 10417), (2431, 8523), (2841, 7293)]