81657430

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{189901}}^1$

素因数の和:189951

約数の個数: 16

約数和(自身を含む): 150402384

約数和(自身を除く): 68744954

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 189901, 379802, 949505, 1899010, 8165743, 16331486, 40828715, 81657430]

約数ペア:

[(1, 81657430), (2, 40828715), (5, 16331486), (10, 8165743), (43, 1899010), (86, 949505), (215, 379802), (430, 189901)]