40209988

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 90448512

約数和(自身を除く): 50238524

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 49, 52, 86, 91, 98, 172, 182, 196, 301, 364, 367, 559, 602, 637, 734, 1118, 1204, 1274, 1468, 2107, 2236, 2548, 2569, 3913, 4214, 4771, 5138, 7826, 8428, 9542, 10276, 15652, 15781, 17983, 19084, 27391, 31562, 33397, 35966, 54782, 63124, 66794, 71932, 109564, 110467, 133588, 205153, 220934, 233779, 410306, 441868, 467558, 773269, 820612, 935116, 1436071, 1546538, 2872142, 3093076, 5744284, 10052497, 20104994, 40209988]

約数ペア:

[(1, 40209988), (2, 20104994), (4, 10052497), (7, 5744284), (13, 3093076), (14, 2872142), (26, 1546538), (28, 1436071), (43, 935116), (49, 820612), (52, 773269), (86, 467558), (91, 441868), (98, 410306), (172, 233779), (182, 220934), (196, 205153), (301, 133588), (364, 110467), (367, 109564), (559, 71932), (602, 66794), (637, 63124), (734, 54782), (1118, 35966), (1204, 33397), (1274, 31562), (1468, 27391), (2107, 19084), (2236, 17983), (2548, 15781), (2569, 15652), (3913, 10276), (4214, 9542), (4771, 8428), (5138, 7826)]