21056385

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8719}}^1$

素因数の和:8757

約数の個数: 32

約数和(自身を含む): 40181760

約数和(自身を除く): 19125375

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8719, 26157, 43595, 61033, 130785, 183099, 200537, 305165, 601611, 915495, 1002685, 1403759, 3008055, 4211277, 7018795, 21056385]

約数ペア:

[(1, 21056385), (3, 7018795), (5, 4211277), (7, 3008055), (15, 1403759), (21, 1002685), (23, 915495), (35, 601611), (69, 305165), (105, 200537), (115, 183099), (161, 130785), (345, 61033), (483, 43595), (805, 26157), (2415, 8719)]