8217181980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{49783}}^1$

素因数の和:49936

約数の個数: 144

約数和(自身を含む): 28704259584

約数和(自身を除く): 20487077604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 131, 140, 180, 210, 252, 262, 315, 393, 420, 524, 630, 655, 786, 917, 1179, 1260, 1310, 1572, 1834, 1965, 2358, 2620, 2751, 3668, 3930, 4585, 4716, 5502, 5895, 7860, 8253, 9170, 11004, 11790, 13755, 16506, 18340, 23580, 27510, 33012, 41265, 49783, 55020, 82530, 99566, 149349, 165060, 199132, 248915, 298698, 348481, 448047, 497830, 597396, 696962, 746745, 896094, 995660, 1045443, 1393924, 1493490, 1742405, 1792188, 2090886, 2240235, 2986980, 3136329, 3484810, 4181772, 4480470, 5227215, 6272658, 6521573, 6969620, 8960940, 10454430, 12545316, 13043146, 15681645, 19564719, 20908860, 26086292, 31363290, 32607865, 39129438, 45651011, 58694157, 62726580, 65215730, 78258876, 91302022, 97823595, 117388314, 130431460, 136953033, 182604044, 195647190, 228255055, 234776628, 273906066, 293470785, 391294380, 410859099, 456510110, 547812132, 586941570, 684765165, 821718198, 913020220, 1173883140, 1369530330, 1643436396, 2054295495, 2739060660, 4108590990, 8217181980]

約数ペア:

[(1, 8217181980), (2, 4108590990), (3, 2739060660), (4, 2054295495), (5, 1643436396), (6, 1369530330), (7, 1173883140), (9, 913020220), (10, 821718198), (12, 684765165), (14, 586941570), (15, 547812132), (18, 456510110), (20, 410859099), (21, 391294380), (28, 293470785), (30, 273906066), (35, 234776628), (36, 228255055), (42, 195647190), (45, 182604044), (60, 136953033), (63, 130431460), (70, 117388314), (84, 97823595), (90, 91302022), (105, 78258876), (126, 65215730), (131, 62726580), (140, 58694157), (180, 45651011), (210, 39129438), (252, 32607865), (262, 31363290), (315, 26086292), (393, 20908860), (420, 19564719), (524, 15681645), (630, 13043146), (655, 12545316), (786, 10454430), (917, 8960940), (1179, 6969620), (1260, 6521573), (1310, 6272658), (1572, 5227215), (1834, 4480470), (1965, 4181772), (2358, 3484810), (2620, 3136329), (2751, 2986980), (3668, 2240235), (3930, 2090886), (4585, 1792188), (4716, 1742405), (5502, 1493490), (5895, 1393924), (7860, 1045443), (8253, 995660), (9170, 896094), (11004, 746745), (11790, 696962), (13755, 597396), (16506, 497830), (18340, 448047), (23580, 348481), (27510, 298698), (33012, 248915), (41265, 199132), (49783, 165060), (55020, 149349), (82530, 99566)]