18969895

素因数分解:

$5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1553}}^1$

素因数の和:1914

約数の個数: 16

約数和(自身を含む): 26107200

約数和(自身を除く): 7137305

約数列:

[1, 5, 7, 35, 349, 1553, 1745, 2443, 7765, 10871, 12215, 54355, 541997, 2709985, 3793979, 18969895]

約数ペア:

[(1, 18969895), (5, 3793979), (7, 2709985), (35, 541997), (349, 54355), (1553, 12215), (1745, 10871), (2443, 7765)]