20486158

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{971}}^1$

素因数の和:1128

約数の個数: 32

約数和(自身を含む): 38631168

約数和(自身を除く): 18145010

約数列:

[1, 2, 7, 11, 14, 22, 77, 137, 154, 274, 959, 971, 1507, 1918, 1942, 3014, 6797, 10549, 10681, 13594, 21098, 21362, 74767, 133027, 149534, 266054, 931189, 1463297, 1862378, 2926594, 10243079, 20486158]

約数ペア:

[(1, 20486158), (2, 10243079), (7, 2926594), (11, 1862378), (14, 1463297), (22, 931189), (77, 266054), (137, 149534), (154, 133027), (274, 74767), (959, 21362), (971, 21098), (1507, 13594), (1918, 10681), (1942, 10549), (3014, 6797)]