28244678980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{2963}}^1$

素因数の和:3194

約数の個数: 144

約数和(自身を含む): 70504027776

約数和(自身を除く): 42259348796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 137, 140, 142, 196, 245, 274, 284, 355, 490, 497, 548, 685, 710, 959, 980, 994, 1370, 1420, 1918, 1988, 2485, 2740, 2963, 3479, 3836, 4795, 4970, 5926, 6713, 6958, 9590, 9727, 9940, 11852, 13426, 13916, 14815, 17395, 19180, 19454, 20741, 26852, 29630, 33565, 34790, 38908, 41482, 48635, 59260, 67130, 68089, 69580, 82964, 97270, 103705, 134260, 136178, 145187, 194540, 207410, 210373, 272356, 290374, 340445, 405931, 414820, 420746, 476623, 580748, 680890, 725935, 811862, 841492, 953246, 1051865, 1361780, 1451870, 1472611, 1623724, 1906492, 2029655, 2103730, 2383115, 2841517, 2903740, 2945222, 4059310, 4207460, 4766230, 5683034, 5890444, 7363055, 8118620, 9532460, 10308277, 11366068, 14207585, 14726110, 19890619, 20616554, 28415170, 28821101, 29452220, 39781238, 41233108, 51541385, 56830340, 57642202, 79562476, 99453095, 103082770, 115284404, 144105505, 198906190, 201747707, 206165540, 288211010, 397812380, 403495414, 576422020, 806990828, 1008738535, 1412233949, 2017477070, 2824467898, 4034954140, 5648935796, 7061169745, 14122339490, 28244678980]

約数ペア:

[(1, 28244678980), (2, 14122339490), (4, 7061169745), (5, 5648935796), (7, 4034954140), (10, 2824467898), (14, 2017477070), (20, 1412233949), (28, 1008738535), (35, 806990828), (49, 576422020), (70, 403495414), (71, 397812380), (98, 288211010), (137, 206165540), (140, 201747707), (142, 198906190), (196, 144105505), (245, 115284404), (274, 103082770), (284, 99453095), (355, 79562476), (490, 57642202), (497, 56830340), (548, 51541385), (685, 41233108), (710, 39781238), (959, 29452220), (980, 28821101), (994, 28415170), (1370, 20616554), (1420, 19890619), (1918, 14726110), (1988, 14207585), (2485, 11366068), (2740, 10308277), (2963, 9532460), (3479, 8118620), (3836, 7363055), (4795, 5890444), (4970, 5683034), (5926, 4766230), (6713, 4207460), (6958, 4059310), (9590, 2945222), (9727, 2903740), (9940, 2841517), (11852, 2383115), (13426, 2103730), (13916, 2029655), (14815, 1906492), (17395, 1623724), (19180, 1472611), (19454, 1451870), (20741, 1361780), (26852, 1051865), (29630, 953246), (33565, 841492), (34790, 811862), (38908, 725935), (41482, 680890), (48635, 580748), (59260, 476623), (67130, 420746), (68089, 414820), (69580, 405931), (82964, 340445), (97270, 290374), (103705, 272356), (134260, 210373), (136178, 207410), (145187, 194540)]