28774900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 80744832

約数和(自身を除く): 51969932

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 37, 44, 50, 55, 70, 74, 77, 100, 101, 110, 140, 148, 154, 175, 185, 202, 220, 259, 275, 308, 350, 370, 385, 404, 407, 505, 518, 550, 700, 707, 740, 770, 814, 925, 1010, 1036, 1100, 1111, 1295, 1414, 1540, 1628, 1850, 1925, 2020, 2035, 2222, 2525, 2590, 2828, 2849, 3535, 3700, 3737, 3850, 4070, 4444, 5050, 5180, 5555, 5698, 6475, 7070, 7474, 7700, 7777, 8140, 10100, 10175, 11110, 11396, 12950, 14140, 14245, 14948, 15554, 17675, 18685, 20350, 22220, 25900, 26159, 27775, 28490, 31108, 35350, 37370, 38885, 40700, 41107, 52318, 55550, 56980, 70700, 71225, 74740, 77770, 82214, 93425, 104636, 111100, 130795, 142450, 155540, 164428, 186850, 194425, 205535, 261590, 284900, 287749, 373700, 388850, 411070, 523180, 575498, 653975, 777700, 822140, 1027675, 1150996, 1307950, 1438745, 2055350, 2615900, 2877490, 4110700, 5754980, 7193725, 14387450, 28774900]

約数ペア:

[(1, 28774900), (2, 14387450), (4, 7193725), (5, 5754980), (7, 4110700), (10, 2877490), (11, 2615900), (14, 2055350), (20, 1438745), (22, 1307950), (25, 1150996), (28, 1027675), (35, 822140), (37, 777700), (44, 653975), (50, 575498), (55, 523180), (70, 411070), (74, 388850), (77, 373700), (100, 287749), (101, 284900), (110, 261590), (140, 205535), (148, 194425), (154, 186850), (175, 164428), (185, 155540), (202, 142450), (220, 130795), (259, 111100), (275, 104636), (308, 93425), (350, 82214), (370, 77770), (385, 74740), (404, 71225), (407, 70700), (505, 56980), (518, 55550), (550, 52318), (700, 41107), (707, 40700), (740, 38885), (770, 37370), (814, 35350), (925, 31108), (1010, 28490), (1036, 27775), (1100, 26159), (1111, 25900), (1295, 22220), (1414, 20350), (1540, 18685), (1628, 17675), (1850, 15554), (1925, 14948), (2020, 14245), (2035, 14140), (2222, 12950), (2525, 11396), (2590, 11110), (2828, 10175), (2849, 10100), (3535, 8140), (3700, 7777), (3737, 7700), (3850, 7474), (4070, 7070), (4444, 6475), (5050, 5698), (5180, 5555)]