51362980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23561}}^1$

素因数の和:23679

約数の個数: 24

約数和(自身を含む): 108856440

約数和(自身を除く): 57493460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 23561, 47122, 94244, 117805, 235610, 471220, 2568149, 5136298, 10272596, 12840745, 25681490, 51362980]

約数ペア:

[(1, 51362980), (2, 25681490), (4, 12840745), (5, 10272596), (10, 5136298), (20, 2568149), (109, 471220), (218, 235610), (436, 117805), (545, 94244), (1090, 47122), (2180, 23561)]