1280497780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1531}}^1$

素因数の和:1661

約数の個数: 96

約数和(自身を含む): 2964971520

約数和(自身を除く): 1684473740

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 71, 76, 95, 124, 142, 155, 190, 284, 310, 355, 380, 589, 620, 710, 1178, 1349, 1420, 1531, 2201, 2356, 2698, 2945, 3062, 4402, 5396, 5890, 6124, 6745, 7655, 8804, 11005, 11780, 13490, 15310, 22010, 26980, 29089, 30620, 41819, 44020, 47461, 58178, 83638, 94922, 108701, 116356, 145445, 167276, 189844, 209095, 217402, 237305, 290890, 418190, 434804, 474610, 543505, 581780, 836380, 901759, 949220, 1087010, 1803518, 2065319, 2174020, 3369731, 3607036, 4130638, 4508795, 6739462, 8261276, 9017590, 10326595, 13478924, 16848655, 18035180, 20653190, 33697310, 41306380, 64024889, 67394620, 128049778, 256099556, 320124445, 640248890, 1280497780]

約数ペア:

[(1, 1280497780), (2, 640248890), (4, 320124445), (5, 256099556), (10, 128049778), (19, 67394620), (20, 64024889), (31, 41306380), (38, 33697310), (62, 20653190), (71, 18035180), (76, 16848655), (95, 13478924), (124, 10326595), (142, 9017590), (155, 8261276), (190, 6739462), (284, 4508795), (310, 4130638), (355, 3607036), (380, 3369731), (589, 2174020), (620, 2065319), (710, 1803518), (1178, 1087010), (1349, 949220), (1420, 901759), (1531, 836380), (2201, 581780), (2356, 543505), (2698, 474610), (2945, 434804), (3062, 418190), (4402, 290890), (5396, 237305), (5890, 217402), (6124, 209095), (6745, 189844), (7655, 167276), (8804, 145445), (11005, 116356), (11780, 108701), (13490, 94922), (15310, 83638), (22010, 58178), (26980, 47461), (29089, 44020), (30620, 41819)]