20163947245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^2\times {\mathrm{157}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 26697822480

約数和(自身を除く): 6533875235

約数列:

[1, 5, 13, 65, 89, 149, 157, 445, 745, 785, 1157, 1937, 2041, 5785, 9685, 10205, 13261, 13973, 22201, 23393, 66305, 69865, 111005, 116965, 172393, 181649, 288613, 304109, 861965, 908245, 1443065, 1520545, 1975889, 2081977, 3485557, 9879445, 10409885, 17427785, 25686557, 27065701, 45312241, 128432785, 135328505, 226561205, 310214573, 1551072865, 4032789449, 20163947245]

約数ペア:

[(1, 20163947245), (5, 4032789449), (13, 1551072865), (65, 310214573), (89, 226561205), (149, 135328505), (157, 128432785), (445, 45312241), (745, 27065701), (785, 25686557), (1157, 17427785), (1937, 10409885), (2041, 9879445), (5785, 3485557), (9685, 2081977), (10205, 1975889), (13261, 1520545), (13973, 1443065), (22201, 908245), (23393, 861965), (66305, 304109), (69865, 288613), (111005, 181649), (116965, 172393)]