21132510125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:340

約数の個数: 96

約数和(自身を含む): 29444912640

約数和(自身を除く): 8312402515

約数列:

[1, 5, 19, 25, 31, 47, 95, 125, 155, 197, 235, 475, 589, 775, 893, 961, 985, 1175, 1457, 2375, 2945, 3743, 3875, 4465, 4805, 4925, 5875, 6107, 7285, 9259, 14725, 18259, 18715, 22325, 24025, 24625, 27683, 30535, 36425, 45167, 46295, 73625, 91295, 93575, 111625, 116033, 120125, 138415, 152675, 175921, 182125, 189317, 225835, 231475, 287029, 456475, 467875, 580165, 692075, 763375, 858173, 879605, 946585, 1129175, 1157375, 1435145, 2282375, 2900825, 3460375, 3597023, 4290865, 4398025, 4732925, 5453551, 5645875, 7175725, 8897899, 14504125, 17985115, 21454325, 21990125, 23664625, 27267755, 35878625, 44489495, 89925575, 107271625, 136338775, 169060081, 222447475, 449627875, 681693875, 845300405, 1112237375, 4226502025, 21132510125]

約数ペア:

[(1, 21132510125), (5, 4226502025), (19, 1112237375), (25, 845300405), (31, 681693875), (47, 449627875), (95, 222447475), (125, 169060081), (155, 136338775), (197, 107271625), (235, 89925575), (475, 44489495), (589, 35878625), (775, 27267755), (893, 23664625), (961, 21990125), (985, 21454325), (1175, 17985115), (1457, 14504125), (2375, 8897899), (2945, 7175725), (3743, 5645875), (3875, 5453551), (4465, 4732925), (4805, 4398025), (4925, 4290865), (5875, 3597023), (6107, 3460375), (7285, 2900825), (9259, 2282375), (14725, 1435145), (18259, 1157375), (18715, 1129175), (22325, 946585), (24025, 879605), (24625, 858173), (27683, 763375), (30535, 692075), (36425, 580165), (45167, 467875), (46295, 456475), (73625, 287029), (91295, 231475), (93575, 225835), (111625, 189317), (116033, 182125), (120125, 175921), (138415, 152675)]