201913172

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{647}}^1\times {\mathrm{1279}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 359976960

約数和(自身を除く): 158063788

約数列:

[1, 2, 4, 61, 122, 244, 647, 1279, 1294, 2558, 2588, 5116, 39467, 78019, 78934, 156038, 157868, 312076, 827513, 1655026, 3310052, 50478293, 100956586, 201913172]

約数ペア:

[(1, 201913172), (2, 100956586), (4, 50478293), (61, 3310052), (122, 1655026), (244, 827513), (647, 312076), (1279, 157868), (1294, 156038), (2558, 78934), (2588, 78019), (5116, 39467)]