81806529

素因数分解:

$3^1\times 7^3\times {\mathrm{107}}^1\times {\mathrm{743}}^1$

素因数の和:874

約数の個数: 32

約数和(自身を含む): 128563200

約数和(自身を除く): 46756671

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 343, 743, 749, 1029, 2229, 2247, 5201, 5243, 15603, 15729, 36407, 36701, 79501, 109221, 110103, 238503, 254849, 556507, 764547, 1669521, 3895549, 11686647, 27268843, 81806529]

約数ペア:

[(1, 81806529), (3, 27268843), (7, 11686647), (21, 3895549), (49, 1669521), (107, 764547), (147, 556507), (321, 254849), (343, 238503), (743, 110103), (749, 109221), (1029, 79501), (2229, 36701), (2247, 36407), (5201, 15729), (5243, 15603)]