20109101880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{647011}}^1$

素因数の和:647069

約数の個数: 128

約数和(自身を含む): 70808993280

約数和(自身を除く): 50699891400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 3108, 3885, 4440, 5180, 6216, 7770, 10360, 15540, 31080, 647011, 1294022, 1941033, 2588044, 3235055, 3882066, 4529077, 5176088, 6470110, 7764132, 9058154, 9705165, 12940220, 13587231, 15528264, 18116308, 19410330, 22645385, 23939407, 25880440, 27174462, 36232616, 38820660, 45290770, 47878814, 54348924, 67936155, 71818221, 77641320, 90581540, 95757628, 108697848, 119697035, 135872310, 143636442, 167575849, 181163080, 191515256, 239394070, 271744620, 287272884, 335151698, 359091105, 478788140, 502727547, 543489240, 574545768, 670303396, 718182210, 837879245, 957576280, 1005455094, 1340606792, 1436364420, 1675758490, 2010910188, 2513637735, 2872728840, 3351516980, 4021820376, 5027275470, 6703033960, 10054550940, 20109101880]

約数ペア:

[(1, 20109101880), (2, 10054550940), (3, 6703033960), (4, 5027275470), (5, 4021820376), (6, 3351516980), (7, 2872728840), (8, 2513637735), (10, 2010910188), (12, 1675758490), (14, 1436364420), (15, 1340606792), (20, 1005455094), (21, 957576280), (24, 837879245), (28, 718182210), (30, 670303396), (35, 574545768), (37, 543489240), (40, 502727547), (42, 478788140), (56, 359091105), (60, 335151698), (70, 287272884), (74, 271744620), (84, 239394070), (105, 191515256), (111, 181163080), (120, 167575849), (140, 143636442), (148, 135872310), (168, 119697035), (185, 108697848), (210, 95757628), (222, 90581540), (259, 77641320), (280, 71818221), (296, 67936155), (370, 54348924), (420, 47878814), (444, 45290770), (518, 38820660), (555, 36232616), (740, 27174462), (777, 25880440), (840, 23939407), (888, 22645385), (1036, 19410330), (1110, 18116308), (1295, 15528264), (1480, 13587231), (1554, 12940220), (2072, 9705165), (2220, 9058154), (2590, 7764132), (3108, 6470110), (3885, 5176088), (4440, 4529077), (5180, 3882066), (6216, 3235055), (7770, 2588044), (10360, 1941033), (15540, 1294022), (31080, 647011)]