19981255

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{30047}}^1$

素因数の和:30078

約数の個数: 16

約数和(自身を含む): 28846080

約数和(自身を除く): 8864825

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 30047, 150235, 210329, 570893, 1051645, 2854465, 3996251, 19981255]

約数ペア:

[(1, 19981255), (5, 3996251), (7, 2854465), (19, 1051645), (35, 570893), (95, 210329), (133, 150235), (665, 30047)]