21191313

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1051}}^1$

素因数の和:1125

約数の個数: 32

約数和(自身を含む): 33933312

約数和(自身を除く): 12741999

約数列:

[1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 1051, 1551, 1833, 3153, 6721, 11561, 13663, 20163, 34683, 40989, 49397, 148191, 150293, 450879, 543367, 642161, 1630101, 1926483, 7063771, 21191313]

約数ペア:

[(1, 21191313), (3, 7063771), (11, 1926483), (13, 1630101), (33, 642161), (39, 543367), (47, 450879), (141, 150293), (143, 148191), (429, 49397), (517, 40989), (611, 34683), (1051, 20163), (1551, 13663), (1833, 11561), (3153, 6721)]