20531458

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{1777}}^1$

素因数の和:1941

約数の個数: 16

約数和(自身を含む): 31683960

約数和(自身を除く): 11152502

約数列:

[1, 2, 53, 106, 109, 218, 1777, 3554, 5777, 11554, 94181, 188362, 193693, 387386, 10265729, 20531458]

約数ペア:

[(1, 20531458), (2, 10265729), (53, 387386), (106, 193693), (109, 188362), (218, 94181), (1777, 11554), (3554, 5777)]