20521485

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2141}}^1$

素因数の和:2226

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 16492275

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2141, 3195, 6423, 9585, 10705, 19269, 32115, 57807, 96345, 152011, 289035, 456033, 760055, 1368099, 2280165, 4104297, 6840495, 20521485]

約数ペア:

[(1, 20521485), (3, 6840495), (5, 4104297), (9, 2280165), (15, 1368099), (27, 760055), (45, 456033), (71, 289035), (135, 152011), (213, 96345), (355, 57807), (639, 32115), (1065, 19269), (1917, 10705), (2141, 9585), (3195, 6423)]