20096973880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1\times {\mathrm{421}}^1$

素因数の和:881

約数の個数: 128

約数和(自身を含む): 47296949760

約数和(自身を除く): 27199975880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 137, 155, 248, 274, 281, 310, 421, 548, 562, 620, 685, 842, 1096, 1124, 1240, 1370, 1405, 1684, 2105, 2248, 2740, 2810, 3368, 4210, 4247, 5480, 5620, 8420, 8494, 8711, 11240, 13051, 16840, 16988, 17422, 21235, 26102, 33976, 34844, 38497, 42470, 43555, 52204, 57677, 65255, 69688, 76994, 84940, 87110, 104408, 115354, 118301, 130510, 153988, 169880, 174220, 192485, 230708, 236602, 261020, 288385, 307976, 348440, 384970, 461416, 473204, 522040, 576770, 591505, 769940, 946408, 1153540, 1183010, 1193407, 1539880, 1787987, 2307080, 2366020, 2386814, 3575974, 3667331, 4732040, 4773628, 5967035, 7151948, 7334662, 8939935, 9547256, 11934070, 14303896, 14669324, 16207237, 17879870, 18336655, 23868140, 29338648, 32414474, 35759740, 36673310, 47736280, 64828948, 71519480, 73346620, 81036185, 129657896, 146693240, 162072370, 324144740, 502424347, 648289480, 1004848694, 2009697388, 2512121735, 4019394776, 5024243470, 10048486940, 20096973880]

約数ペア:

[(1, 20096973880), (2, 10048486940), (4, 5024243470), (5, 4019394776), (8, 2512121735), (10, 2009697388), (20, 1004848694), (31, 648289480), (40, 502424347), (62, 324144740), (124, 162072370), (137, 146693240), (155, 129657896), (248, 81036185), (274, 73346620), (281, 71519480), (310, 64828948), (421, 47736280), (548, 36673310), (562, 35759740), (620, 32414474), (685, 29338648), (842, 23868140), (1096, 18336655), (1124, 17879870), (1240, 16207237), (1370, 14669324), (1405, 14303896), (1684, 11934070), (2105, 9547256), (2248, 8939935), (2740, 7334662), (2810, 7151948), (3368, 5967035), (4210, 4773628), (4247, 4732040), (5480, 3667331), (5620, 3575974), (8420, 2386814), (8494, 2366020), (8711, 2307080), (11240, 1787987), (13051, 1539880), (16840, 1193407), (16988, 1183010), (17422, 1153540), (21235, 946408), (26102, 769940), (33976, 591505), (34844, 576770), (38497, 522040), (42470, 473204), (43555, 461416), (52204, 384970), (57677, 348440), (65255, 307976), (69688, 288385), (76994, 261020), (84940, 236602), (87110, 230708), (104408, 192485), (115354, 174220), (118301, 169880), (130510, 153988)]