20897305

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2657}}^1$

素因数の和:2697

約数の個数: 24

約数和(自身を含む): 29695176

約数和(自身を除く): 8797871

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 605, 715, 1573, 2657, 7865, 13285, 29227, 34541, 146135, 172705, 321497, 379951, 1607485, 1899755, 4179461, 20897305]

約数ペア:

[(1, 20897305), (5, 4179461), (11, 1899755), (13, 1607485), (55, 379951), (65, 321497), (121, 172705), (143, 146135), (605, 34541), (715, 29227), (1573, 13285), (2657, 7865)]