21978542

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{2459}}^1$

素因数の和:2611

約数の個数: 16

約数和(自身を含む): 34095600

約数和(自身を除く): 12117058

約数列:

[1, 2, 41, 82, 109, 218, 2459, 4469, 4918, 8938, 100819, 201638, 268031, 536062, 10989271, 21978542]

約数ペア:

[(1, 21978542), (2, 10989271), (41, 536062), (82, 268031), (109, 201638), (218, 100819), (2459, 8938), (4469, 4918)]