20451543

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51257}}^1$

素因数の和:51286

約数の個数: 16

約数和(自身を含む): 32805120

約数和(自身を除く): 12353577

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51257, 153771, 358799, 973883, 1076397, 2921649, 6817181, 20451543]

約数ペア:

[(1, 20451543), (3, 6817181), (7, 2921649), (19, 1076397), (21, 973883), (57, 358799), (133, 153771), (399, 51257)]