42561905

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1\times {\mathrm{311}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 51936768

約数和(自身を除く): 9374863

約数列:

[1, 5, 101, 271, 311, 505, 1355, 1555, 27371, 31411, 84281, 136855, 157055, 421405, 8512381, 42561905]

約数ペア:

[(1, 42561905), (5, 8512381), (101, 421405), (271, 157055), (311, 136855), (505, 84281), (1355, 31411), (1555, 27371)]