18989398

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21727}}^1$

素因数の和:21771

約数の個数: 16

約数和(自身を含む): 31288320

約数和(自身を除く): 12298922

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 21727, 43454, 412813, 499721, 825626, 999442, 9494699, 18989398]

約数ペア:

[(1, 18989398), (2, 9494699), (19, 999442), (23, 825626), (38, 499721), (46, 412813), (437, 43454), (874, 21727)]