20153990143

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1\times {\mathrm{5003}}^1$

素因数の和:5355

約数の個数: 32

約数和(自身を含む): 24349704192

約数和(自身を除く): 4195714049

約数列:

[1, 7, 23, 131, 161, 191, 917, 1337, 3013, 4393, 5003, 21091, 25021, 30751, 35021, 115069, 175147, 575483, 655393, 805483, 955573, 4028381, 4587751, 6689011, 15074039, 21978179, 105518273, 125180063, 153847253, 876260441, 2879141449, 20153990143]

約数ペア:

[(1, 20153990143), (7, 2879141449), (23, 876260441), (131, 153847253), (161, 125180063), (191, 105518273), (917, 21978179), (1337, 15074039), (3013, 6689011), (4393, 4587751), (5003, 4028381), (21091, 955573), (25021, 805483), (30751, 655393), (35021, 575483), (115069, 175147)]