81837140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4831}}^1$

素因数の和:4869

約数の個数: 72

約数和(自身を含む): 215932416

約数和(自身を除く): 134095276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 4831, 8470, 9662, 16940, 19324, 24155, 33817, 48310, 53141, 67634, 96620, 106282, 135268, 169085, 212564, 265705, 338170, 371987, 531410, 584551, 676340, 743974, 1062820, 1169102, 1487948, 1859935, 2338204, 2922755, 3719870, 4091857, 5845510, 7439740, 8183714, 11691020, 16367428, 20459285, 40918570, 81837140]

約数ペア:

[(1, 81837140), (2, 40918570), (4, 20459285), (5, 16367428), (7, 11691020), (10, 8183714), (11, 7439740), (14, 5845510), (20, 4091857), (22, 3719870), (28, 2922755), (35, 2338204), (44, 1859935), (55, 1487948), (70, 1169102), (77, 1062820), (110, 743974), (121, 676340), (140, 584551), (154, 531410), (220, 371987), (242, 338170), (308, 265705), (385, 212564), (484, 169085), (605, 135268), (770, 106282), (847, 96620), (1210, 67634), (1540, 53141), (1694, 48310), (2420, 33817), (3388, 24155), (4235, 19324), (4831, 16940), (8470, 9662)]