28378240

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:198

約数の個数: 128

約数和(自身を含む): 77112000

約数和(自身を除く): 48733760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 64, 80, 88, 110, 116, 128, 139, 145, 160, 176, 220, 232, 278, 290, 319, 320, 352, 440, 464, 556, 580, 638, 640, 695, 704, 880, 928, 1112, 1160, 1276, 1390, 1408, 1529, 1595, 1760, 1856, 2224, 2320, 2552, 2780, 3058, 3190, 3520, 3712, 4031, 4448, 4640, 5104, 5560, 6116, 6380, 7040, 7645, 8062, 8896, 9280, 10208, 11120, 12232, 12760, 15290, 16124, 17792, 18560, 20155, 20416, 22240, 24464, 25520, 30580, 32248, 40310, 40832, 44341, 44480, 48928, 51040, 61160, 64496, 80620, 88682, 88960, 97856, 102080, 122320, 128992, 161240, 177364, 195712, 204160, 221705, 244640, 257984, 322480, 354728, 443410, 489280, 515968, 644960, 709456, 886820, 978560, 1289920, 1418912, 1773640, 2579840, 2837824, 3547280, 5675648, 7094560, 14189120, 28378240]

約数ペア:

[(1, 28378240), (2, 14189120), (4, 7094560), (5, 5675648), (8, 3547280), (10, 2837824), (11, 2579840), (16, 1773640), (20, 1418912), (22, 1289920), (29, 978560), (32, 886820), (40, 709456), (44, 644960), (55, 515968), (58, 489280), (64, 443410), (80, 354728), (88, 322480), (110, 257984), (116, 244640), (128, 221705), (139, 204160), (145, 195712), (160, 177364), (176, 161240), (220, 128992), (232, 122320), (278, 102080), (290, 97856), (319, 88960), (320, 88682), (352, 80620), (440, 64496), (464, 61160), (556, 51040), (580, 48928), (638, 44480), (640, 44341), (695, 40832), (704, 40310), (880, 32248), (928, 30580), (1112, 25520), (1160, 24464), (1276, 22240), (1390, 20416), (1408, 20155), (1529, 18560), (1595, 17792), (1760, 16124), (1856, 15290), (2224, 12760), (2320, 12232), (2552, 11120), (2780, 10208), (3058, 9280), (3190, 8896), (3520, 8062), (3712, 7645), (4031, 7040), (4448, 6380), (4640, 6116), (5104, 5560)]