21441255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{653}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 37670400

約数和(自身を除く): 16229145

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 199, 597, 653, 995, 1959, 2189, 2985, 3265, 6567, 7183, 9795, 10945, 21549, 32835, 35915, 107745, 129947, 389841, 649735, 1429417, 1949205, 4288251, 7147085, 21441255]

約数ペア:

[(1, 21441255), (3, 7147085), (5, 4288251), (11, 1949205), (15, 1429417), (33, 649735), (55, 389841), (165, 129947), (199, 107745), (597, 35915), (653, 32835), (995, 21549), (1959, 10945), (2189, 9795), (2985, 7183), (3265, 6567)]