28408500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 144

約数和(自身を含む): 91990080

約数和(自身を除く): 63581580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 59, 60, 75, 90, 100, 107, 118, 125, 150, 177, 180, 214, 225, 236, 250, 295, 300, 321, 354, 375, 428, 450, 500, 531, 535, 590, 642, 708, 750, 885, 900, 963, 1062, 1070, 1125, 1180, 1284, 1475, 1500, 1605, 1770, 1926, 2124, 2140, 2250, 2655, 2675, 2950, 3210, 3540, 3852, 4425, 4500, 4815, 5310, 5350, 5900, 6313, 6420, 7375, 8025, 8850, 9630, 10620, 10700, 12626, 13275, 13375, 14750, 16050, 17700, 18939, 19260, 22125, 24075, 25252, 26550, 26750, 29500, 31565, 32100, 37878, 40125, 44250, 48150, 53100, 53500, 56817, 63130, 66375, 75756, 80250, 88500, 94695, 96300, 113634, 120375, 126260, 132750, 157825, 160500, 189390, 227268, 240750, 265500, 284085, 315650, 378780, 473475, 481500, 568170, 631300, 789125, 946950, 1136340, 1420425, 1578250, 1893900, 2367375, 2840850, 3156500, 4734750, 5681700, 7102125, 9469500, 14204250, 28408500]

約数ペア:

[(1, 28408500), (2, 14204250), (3, 9469500), (4, 7102125), (5, 5681700), (6, 4734750), (9, 3156500), (10, 2840850), (12, 2367375), (15, 1893900), (18, 1578250), (20, 1420425), (25, 1136340), (30, 946950), (36, 789125), (45, 631300), (50, 568170), (59, 481500), (60, 473475), (75, 378780), (90, 315650), (100, 284085), (107, 265500), (118, 240750), (125, 227268), (150, 189390), (177, 160500), (180, 157825), (214, 132750), (225, 126260), (236, 120375), (250, 113634), (295, 96300), (300, 94695), (321, 88500), (354, 80250), (375, 75756), (428, 66375), (450, 63130), (500, 56817), (531, 53500), (535, 53100), (590, 48150), (642, 44250), (708, 40125), (750, 37878), (885, 32100), (900, 31565), (963, 29500), (1062, 26750), (1070, 26550), (1125, 25252), (1180, 24075), (1284, 22125), (1475, 19260), (1500, 18939), (1605, 17700), (1770, 16050), (1926, 14750), (2124, 13375), (2140, 13275), (2250, 12626), (2655, 10700), (2675, 10620), (2950, 9630), (3210, 8850), (3540, 8025), (3852, 7375), (4425, 6420), (4500, 6313), (4815, 5900), (5310, 5350)]