81257642

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{45497}}^1$

素因数の和:45565

約数の個数: 16

約数和(自身を含む): 131034240

約数和(自身を除く): 49776598

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 45497, 90994, 864443, 1728886, 2138359, 4276718, 40628821, 81257642]

約数ペア:

[(1, 81257642), (2, 40628821), (19, 4276718), (38, 2138359), (47, 1728886), (94, 864443), (893, 90994), (1786, 45497)]