20869009

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{461}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 3968111

約数列:

[1, 7, 29, 203, 223, 461, 1561, 3227, 6467, 13369, 45269, 93583, 102803, 719621, 2981287, 20869009]

約数ペア:

[(1, 20869009), (7, 2981287), (29, 719621), (203, 102803), (223, 93583), (461, 45269), (1561, 13369), (3227, 6467)]