20160863125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{643}}^1$

素因数の和:920

約数の個数: 80

約数和(自身を含む): 28898299584

約数和(自身を除く): 8737436459

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 227, 325, 425, 625, 643, 1105, 1135, 1625, 2125, 2951, 3215, 3859, 5525, 5675, 8125, 8359, 10625, 10931, 14755, 16075, 19295, 27625, 28375, 41795, 50167, 54655, 73775, 80375, 96475, 138125, 141875, 142103, 145961, 208975, 250835, 273275, 368875, 401875, 482375, 710515, 729805, 1044875, 1254175, 1366375, 1844375, 1897493, 2411875, 2481337, 3552575, 3649025, 5224375, 6270875, 6831875, 9487465, 12406685, 17762875, 18245125, 31354375, 32257381, 47437325, 62033425, 88814375, 91225625, 161286905, 237186625, 310167125, 806434525, 1185933125, 1550835625, 4032172625, 20160863125]

約数ペア:

[(1, 20160863125), (5, 4032172625), (13, 1550835625), (17, 1185933125), (25, 806434525), (65, 310167125), (85, 237186625), (125, 161286905), (221, 91225625), (227, 88814375), (325, 62033425), (425, 47437325), (625, 32257381), (643, 31354375), (1105, 18245125), (1135, 17762875), (1625, 12406685), (2125, 9487465), (2951, 6831875), (3215, 6270875), (3859, 5224375), (5525, 3649025), (5675, 3552575), (8125, 2481337), (8359, 2411875), (10625, 1897493), (10931, 1844375), (14755, 1366375), (16075, 1254175), (19295, 1044875), (27625, 729805), (28375, 710515), (41795, 482375), (50167, 401875), (54655, 368875), (73775, 273275), (80375, 250835), (96475, 208975), (138125, 145961), (141875, 142103)]