20615565

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 34056576

約数和(自身を除く): 13441011

約数列:

[1, 3, 5, 15, 67, 73, 201, 219, 281, 335, 365, 843, 1005, 1095, 1405, 4215, 4891, 14673, 18827, 20513, 24455, 56481, 61539, 73365, 94135, 102565, 282405, 307695, 1374371, 4123113, 6871855, 20615565]

約数ペア:

[(1, 20615565), (3, 6871855), (5, 4123113), (15, 1374371), (67, 307695), (73, 282405), (201, 102565), (219, 94135), (281, 73365), (335, 61539), (365, 56481), (843, 24455), (1005, 20513), (1095, 18827), (1405, 14673), (4215, 4891)]