55811721

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3253}}^1$

素因数の和:3325

約数の個数: 32

約数和(自身を含む): 91632640

約数和(自身を除く): 35820919

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 2451, 3253, 5719, 9759, 17157, 22771, 61807, 68313, 139879, 185421, 419637, 432649, 979153, 1297947, 2657701, 2937459, 7973103, 18603907, 55811721]

約数ペア:

[(1, 55811721), (3, 18603907), (7, 7973103), (19, 2937459), (21, 2657701), (43, 1297947), (57, 979153), (129, 432649), (133, 419637), (301, 185421), (399, 139879), (817, 68313), (903, 61807), (2451, 22771), (3253, 17157), (5719, 9759)]