20163578825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^2\times {\mathrm{9941}}^1$

素因数の和:10122

約数の個数: 36

約数和(自身を含む): 27274027788

約数和(自身を除く): 7110448963

約数列:

[1, 5, 13, 25, 65, 79, 325, 395, 1027, 1975, 5135, 6241, 9941, 25675, 31205, 49705, 81133, 129233, 156025, 248525, 405665, 646165, 785339, 2028325, 3230825, 3926695, 10209407, 19633475, 51047035, 62041781, 255235175, 310208905, 806543153, 1551044525, 4032715765, 20163578825]

約数ペア:

[(1, 20163578825), (5, 4032715765), (13, 1551044525), (25, 806543153), (65, 310208905), (79, 255235175), (325, 62041781), (395, 51047035), (1027, 19633475), (1975, 10209407), (5135, 3926695), (6241, 3230825), (9941, 2028325), (25675, 785339), (31205, 646165), (49705, 405665), (81133, 248525), (129233, 156025)]