80515825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 122536800

約数和(自身を除く): 42020975

約数列:

[1, 5, 13, 17, 19, 25, 59, 65, 85, 95, 169, 221, 247, 295, 323, 325, 425, 475, 767, 845, 1003, 1105, 1121, 1235, 1475, 1615, 2873, 3211, 3835, 4199, 4225, 5015, 5525, 5605, 6175, 8075, 9971, 13039, 14365, 14573, 16055, 19057, 19175, 20995, 25075, 28025, 49855, 54587, 65195, 71825, 72865, 80275, 95285, 104975, 169507, 189449, 247741, 249275, 272935, 325975, 364325, 476425, 847535, 947245, 1238705, 1364675, 3220633, 4237675, 4736225, 6193525, 16103165, 80515825]

約数ペア:

[(1, 80515825), (5, 16103165), (13, 6193525), (17, 4736225), (19, 4237675), (25, 3220633), (59, 1364675), (65, 1238705), (85, 947245), (95, 847535), (169, 476425), (221, 364325), (247, 325975), (295, 272935), (323, 249275), (325, 247741), (425, 189449), (475, 169507), (767, 104975), (845, 95285), (1003, 80275), (1105, 72865), (1121, 71825), (1235, 65195), (1475, 54587), (1615, 49855), (2873, 28025), (3211, 25075), (3835, 20995), (4199, 19175), (4225, 19057), (5015, 16055), (5525, 14573), (5605, 14365), (6175, 13039), (8075, 9971)]