21484705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12601}}^1$

素因数の和:12648

約数の個数: 16

約数和(自身を含む): 29035008

約数和(自身を除く): 7550303

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12601, 63005, 138611, 390631, 693055, 1953155, 4296941, 21484705]

約数ペア:

[(1, 21484705), (5, 4296941), (11, 1953155), (31, 693055), (55, 390631), (155, 138611), (341, 63005), (1705, 12601)]