18817721

素因数分解:

${\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:416

約数の個数: 16

約数和(自身を含む): 20885760

約数和(自身を除く): 2068039

約数列:

[1, 13, 73, 79, 251, 949, 1027, 3263, 5767, 18323, 19829, 74971, 238199, 257777, 1447517, 18817721]

約数ペア:

[(1, 18817721), (13, 1447517), (73, 257777), (79, 238199), (251, 74971), (949, 19829), (1027, 18323), (3263, 5767)]