17980795

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{929}}^1$

素因数の和:1027

約数の個数: 24

約数和(自身を含む): 25444800

約数和(自身を除く): 7464005

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 929, 2765, 3871, 4645, 6503, 19355, 32515, 45521, 73391, 227605, 366955, 513737, 2568685, 3596159, 17980795]

約数ペア:

[(1, 17980795), (5, 3596159), (7, 2568685), (35, 513737), (49, 366955), (79, 227605), (245, 73391), (395, 45521), (553, 32515), (929, 19355), (2765, 6503), (3871, 4645)]