19510040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 50274000

約数和(自身を除く): 30763960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 121, 139, 145, 220, 232, 242, 278, 290, 319, 440, 484, 556, 580, 605, 638, 695, 968, 1112, 1160, 1210, 1276, 1390, 1529, 1595, 2420, 2552, 2780, 3058, 3190, 3509, 4031, 4840, 5560, 6116, 6380, 7018, 7645, 8062, 12232, 12760, 14036, 15290, 16124, 16819, 17545, 20155, 28072, 30580, 32248, 33638, 35090, 40310, 44341, 61160, 67276, 70180, 80620, 84095, 88682, 134552, 140360, 161240, 168190, 177364, 221705, 336380, 354728, 443410, 487751, 672760, 886820, 975502, 1773640, 1951004, 2438755, 3902008, 4877510, 9755020, 19510040]

約数ペア:

[(1, 19510040), (2, 9755020), (4, 4877510), (5, 3902008), (8, 2438755), (10, 1951004), (11, 1773640), (20, 975502), (22, 886820), (29, 672760), (40, 487751), (44, 443410), (55, 354728), (58, 336380), (88, 221705), (110, 177364), (116, 168190), (121, 161240), (139, 140360), (145, 134552), (220, 88682), (232, 84095), (242, 80620), (278, 70180), (290, 67276), (319, 61160), (440, 44341), (484, 40310), (556, 35090), (580, 33638), (605, 32248), (638, 30580), (695, 28072), (968, 20155), (1112, 17545), (1160, 16819), (1210, 16124), (1276, 15290), (1390, 14036), (1529, 12760), (1595, 12232), (2420, 8062), (2552, 7645), (2780, 7018), (3058, 6380), (3190, 6116), (3509, 5560), (4031, 4840)]