20571445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 27841536

約数和(自身を除く): 7270091

約数列:

[1, 5, 17, 31, 37, 85, 155, 185, 211, 527, 629, 1055, 1147, 2635, 3145, 3587, 5735, 6541, 7807, 17935, 19499, 32705, 39035, 97495, 111197, 132719, 242017, 555985, 663595, 1210085, 4114289, 20571445]

約数ペア:

[(1, 20571445), (5, 4114289), (17, 1210085), (31, 663595), (37, 555985), (85, 242017), (155, 132719), (185, 111197), (211, 97495), (527, 39035), (629, 32705), (1055, 19499), (1147, 17935), (2635, 7807), (3145, 6541), (3587, 5735)]