21128385

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{48571}}^1$

素因数の和:48608

約数の個数: 16

約数和(自身を含む): 34971840

約数和(自身を除く): 13843455

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 48571, 145713, 242855, 728565, 1408559, 4225677, 7042795, 21128385]

約数ペア:

[(1, 21128385), (3, 7042795), (5, 4225677), (15, 1408559), (29, 728565), (87, 242855), (145, 145713), (435, 48571)]