20121544825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:511

約数の個数: 96

約数和(自身を含む): 28283904000

約数和(自身を除く): 8162359175

約数列:

[1, 5, 19, 23, 25, 47, 95, 115, 149, 235, 263, 437, 475, 575, 745, 893, 1081, 1175, 1315, 2185, 2831, 3427, 3725, 4465, 4997, 5405, 6049, 6575, 7003, 10925, 12361, 14155, 17135, 20539, 22325, 24985, 27025, 30245, 35015, 39187, 61805, 65113, 70775, 85675, 102695, 114931, 124925, 133057, 151225, 161069, 175075, 195935, 234859, 284303, 309025, 325565, 513475, 574655, 665285, 744553, 805345, 901301, 979675, 1174295, 1421515, 1627825, 1841789, 2873275, 3060311, 3326425, 3722765, 4026725, 4506505, 5401757, 5871475, 7107575, 9208945, 15301555, 17124719, 18613825, 22532525, 27008785, 34993991, 42361147, 46044725, 76507775, 85623595, 135043925, 174969955, 211805735, 428117975, 804861793, 874849775, 1059028675, 4024308965, 20121544825]

約数ペア:

[(1, 20121544825), (5, 4024308965), (19, 1059028675), (23, 874849775), (25, 804861793), (47, 428117975), (95, 211805735), (115, 174969955), (149, 135043925), (235, 85623595), (263, 76507775), (437, 46044725), (475, 42361147), (575, 34993991), (745, 27008785), (893, 22532525), (1081, 18613825), (1175, 17124719), (1315, 15301555), (2185, 9208945), (2831, 7107575), (3427, 5871475), (3725, 5401757), (4465, 4506505), (4997, 4026725), (5405, 3722765), (6049, 3326425), (6575, 3060311), (7003, 2873275), (10925, 1841789), (12361, 1627825), (14155, 1421515), (17135, 1174295), (20539, 979675), (22325, 901301), (24985, 805345), (27025, 744553), (30245, 665285), (35015, 574655), (39187, 513475), (61805, 325565), (65113, 309025), (70775, 284303), (85675, 234859), (102695, 195935), (114931, 175075), (124925, 161069), (133057, 151225)]