12901900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 31466736

約数和(自身を除く): 18564836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 37, 44, 50, 55, 74, 100, 110, 148, 185, 220, 275, 317, 370, 407, 550, 634, 740, 814, 925, 1100, 1268, 1585, 1628, 1850, 2035, 3170, 3487, 3700, 4070, 6340, 6974, 7925, 8140, 10175, 11729, 13948, 15850, 17435, 20350, 23458, 31700, 34870, 40700, 46916, 58645, 69740, 87175, 117290, 129019, 174350, 234580, 258038, 293225, 348700, 516076, 586450, 645095, 1172900, 1290190, 2580380, 3225475, 6450950, 12901900]

約数ペア:

[(1, 12901900), (2, 6450950), (4, 3225475), (5, 2580380), (10, 1290190), (11, 1172900), (20, 645095), (22, 586450), (25, 516076), (37, 348700), (44, 293225), (50, 258038), (55, 234580), (74, 174350), (100, 129019), (110, 117290), (148, 87175), (185, 69740), (220, 58645), (275, 46916), (317, 40700), (370, 34870), (407, 31700), (550, 23458), (634, 20350), (740, 17435), (814, 15850), (925, 13948), (1100, 11729), (1268, 10175), (1585, 8140), (1628, 7925), (1850, 6974), (2035, 6340), (3170, 4070), (3487, 3700)]