56805020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{91621}}^1$

素因数の和:91661

約数の個数: 24

約数和(自身を含む): 123139968

約数和(自身を除く): 66334948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 91621, 183242, 366484, 458105, 916210, 1832420, 2840251, 5680502, 11361004, 14201255, 28402510, 56805020]

約数ペア:

[(1, 56805020), (2, 28402510), (4, 14201255), (5, 11361004), (10, 5680502), (20, 2840251), (31, 1832420), (62, 916210), (124, 458105), (155, 366484), (310, 183242), (620, 91621)]