18991406

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43759}}^1$

素因数の和:43799

約数の個数: 16

約数和(自身を含む): 33607680

約数和(自身を除く): 14616274

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 43759, 87518, 306313, 612626, 1356529, 2713058, 9495703, 18991406]

約数ペア:

[(1, 18991406), (2, 9495703), (7, 2713058), (14, 1356529), (31, 612626), (62, 306313), (217, 87518), (434, 43759)]