21075418

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2693}}^1$

素因数の和:2758

約数の個数: 32

約数和(自身を含む): 39828096

約数和(自身を除く): 18752678

約数列:

[1, 2, 7, 13, 14, 26, 43, 86, 91, 182, 301, 559, 602, 1118, 2693, 3913, 5386, 7826, 18851, 35009, 37702, 70018, 115799, 231598, 245063, 490126, 810593, 1505387, 1621186, 3010774, 10537709, 21075418]

約数ペア:

[(1, 21075418), (2, 10537709), (7, 3010774), (13, 1621186), (14, 1505387), (26, 810593), (43, 490126), (86, 245063), (91, 231598), (182, 115799), (301, 70018), (559, 37702), (602, 35009), (1118, 18851), (2693, 7826), (3913, 5386)]