21736755

素因数分解:

$3^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{281}}^1$

素因数の和:489

約数の個数: 40

約数和(自身を含む): 39308544

約数和(自身を除く): 17571789

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 191, 281, 405, 573, 843, 955, 1405, 1719, 2529, 2865, 4215, 5157, 7587, 8595, 12645, 15471, 22761, 25785, 37935, 53671, 77355, 113805, 161013, 268355, 483039, 805065, 1449117, 2415195, 4347351, 7245585, 21736755]

約数ペア:

[(1, 21736755), (3, 7245585), (5, 4347351), (9, 2415195), (15, 1449117), (27, 805065), (45, 483039), (81, 268355), (135, 161013), (191, 113805), (281, 77355), (405, 53671), (573, 37935), (843, 25785), (955, 22761), (1405, 15471), (1719, 12645), (2529, 8595), (2865, 7587), (4215, 5157)]