21839345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12809}}^1$

素因数の和:12856

約数の個数: 16

約数和(自身を含む): 29514240

約数和(自身を除く): 7674895

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12809, 64045, 140899, 397079, 704495, 1985395, 4367869, 21839345]

約数ペア:

[(1, 21839345), (5, 4367869), (11, 1985395), (31, 704495), (55, 397079), (155, 140899), (341, 64045), (1705, 12809)]