20172952821

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1039}}^1\times {\mathrm{48661}}^1$

素因数の和:49729

約数の個数: 32

約数和(自身を含む): 32389427200

約数和(自身を除く): 12216474379

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 1039, 3117, 7273, 19741, 21819, 48661, 59223, 138187, 145983, 340627, 414561, 924559, 1021881, 2773677, 6471913, 19415739, 50558779, 151676337, 353911453, 960616801, 1061734359, 2881850403, 6724317607, 20172952821]

約数ペア:

[(1, 20172952821), (3, 6724317607), (7, 2881850403), (19, 1061734359), (21, 960616801), (57, 353911453), (133, 151676337), (399, 50558779), (1039, 19415739), (3117, 6471913), (7273, 2773677), (19741, 1021881), (21819, 924559), (48661, 414561), (59223, 340627), (138187, 145983)]