21828135

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{463}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 40089600

約数和(自身を除く): 18261465

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 449, 463, 1347, 1389, 2245, 2315, 3143, 3241, 6735, 6945, 9429, 9723, 15715, 16205, 47145, 48615, 207887, 623661, 1039435, 1455209, 3118305, 4365627, 7276045, 21828135]

約数ペア:

[(1, 21828135), (3, 7276045), (5, 4365627), (7, 3118305), (15, 1455209), (21, 1039435), (35, 623661), (105, 207887), (449, 48615), (463, 47145), (1347, 16205), (1389, 15715), (2245, 9723), (2315, 9429), (3143, 6945), (3241, 6735)]