19668235

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 26438400

約数和(自身を除く): 6770165

約数列:

[1, 5, 17, 29, 79, 85, 101, 145, 395, 493, 505, 1343, 1717, 2291, 2465, 2929, 6715, 7979, 8585, 11455, 14645, 38947, 39895, 49793, 135643, 194735, 231391, 248965, 678215, 1156955, 3933647, 19668235]

約数ペア:

[(1, 19668235), (5, 3933647), (17, 1156955), (29, 678215), (79, 248965), (85, 231391), (101, 194735), (145, 135643), (395, 49793), (493, 39895), (505, 38947), (1343, 14645), (1717, 11455), (2291, 8585), (2465, 7979), (2929, 6715)]