21444021

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 13936779

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 179, 243, 261, 459, 493, 537, 783, 1377, 1479, 1611, 2349, 3043, 4131, 4437, 4833, 5191, 7047, 9129, 13311, 14499, 15573, 27387, 39933, 43497, 46719, 82161, 88247, 119799, 140157, 246483, 264741, 420471, 739449, 794223, 1261413, 2382669, 7148007, 21444021]

約数ペア:

[(1, 21444021), (3, 7148007), (9, 2382669), (17, 1261413), (27, 794223), (29, 739449), (51, 420471), (81, 264741), (87, 246483), (153, 140157), (179, 119799), (243, 88247), (261, 82161), (459, 46719), (493, 43497), (537, 39933), (783, 27387), (1377, 15573), (1479, 14499), (1611, 13311), (2349, 9129), (3043, 7047), (4131, 5191), (4437, 4833)]