28645120

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:190

約数の個数: 144

約数和(自身を含む): 82414080

約数和(自身を除く): 53768960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 128, 139, 140, 160, 161, 184, 224, 230, 256, 278, 280, 320, 322, 368, 448, 460, 556, 560, 640, 644, 695, 736, 805, 896, 920, 973, 1112, 1120, 1280, 1288, 1390, 1472, 1610, 1792, 1840, 1946, 2224, 2240, 2576, 2780, 2944, 3197, 3220, 3680, 3892, 4448, 4480, 4865, 5152, 5560, 5888, 6394, 6440, 7360, 7784, 8896, 8960, 9730, 10304, 11120, 12788, 12880, 14720, 15568, 15985, 17792, 19460, 20608, 22240, 22379, 25576, 25760, 29440, 31136, 31970, 35584, 38920, 41216, 44480, 44758, 51152, 51520, 62272, 63940, 77840, 88960, 89516, 102304, 103040, 111895, 124544, 127880, 155680, 177920, 179032, 204608, 206080, 223790, 249088, 255760, 311360, 358064, 409216, 447580, 511520, 622720, 716128, 818432, 895160, 1023040, 1245440, 1432256, 1790320, 2046080, 2864512, 3580640, 4092160, 5729024, 7161280, 14322560, 28645120]

約数ペア:

[(1, 28645120), (2, 14322560), (4, 7161280), (5, 5729024), (7, 4092160), (8, 3580640), (10, 2864512), (14, 2046080), (16, 1790320), (20, 1432256), (23, 1245440), (28, 1023040), (32, 895160), (35, 818432), (40, 716128), (46, 622720), (56, 511520), (64, 447580), (70, 409216), (80, 358064), (92, 311360), (112, 255760), (115, 249088), (128, 223790), (139, 206080), (140, 204608), (160, 179032), (161, 177920), (184, 155680), (224, 127880), (230, 124544), (256, 111895), (278, 103040), (280, 102304), (320, 89516), (322, 88960), (368, 77840), (448, 63940), (460, 62272), (556, 51520), (560, 51152), (640, 44758), (644, 44480), (695, 41216), (736, 38920), (805, 35584), (896, 31970), (920, 31136), (973, 29440), (1112, 25760), (1120, 25576), (1280, 22379), (1288, 22240), (1390, 20608), (1472, 19460), (1610, 17792), (1792, 15985), (1840, 15568), (1946, 14720), (2224, 12880), (2240, 12788), (2576, 11120), (2780, 10304), (2944, 9730), (3197, 8960), (3220, 8896), (3680, 7784), (3892, 7360), (4448, 6440), (4480, 6394), (4865, 5888), (5152, 5560)]