21069615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6473}}^1$

素因数の和:6519

約数の個数: 32

約数和(自身を含む): 39776256

約数和(自身を除く): 18706641

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6473, 19419, 32365, 45311, 97095, 135933, 200663, 226555, 601989, 679665, 1003315, 1404641, 3009945, 4213923, 7023205, 21069615]

約数ペア:

[(1, 21069615), (3, 7023205), (5, 4213923), (7, 3009945), (15, 1404641), (21, 1003315), (31, 679665), (35, 601989), (93, 226555), (105, 200663), (155, 135933), (217, 97095), (465, 45311), (651, 32365), (1085, 19419), (3255, 6473)]