18907538

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{13721}}^1$

素因数の和:13789

約数の個数: 16

約数和(自身を含む): 31121496

約数和(自身を除く): 12213958

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 13721, 27442, 178373, 356746, 727213, 1454426, 9453769, 18907538]

約数ペア:

[(1, 18907538), (2, 9453769), (13, 1454426), (26, 727213), (53, 356746), (106, 178373), (689, 27442), (1378, 13721)]