19997096

素因数分解:

$2^3\times 7^2\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 24052504

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 139, 196, 278, 367, 392, 556, 734, 973, 1112, 1468, 1946, 2569, 2936, 3892, 5138, 6811, 7784, 10276, 13622, 17983, 20552, 27244, 35966, 51013, 54488, 71932, 102026, 143864, 204052, 357091, 408104, 714182, 1428364, 2499637, 2856728, 4999274, 9998548, 19997096]

約数ペア:

[(1, 19997096), (2, 9998548), (4, 4999274), (7, 2856728), (8, 2499637), (14, 1428364), (28, 714182), (49, 408104), (56, 357091), (98, 204052), (139, 143864), (196, 102026), (278, 71932), (367, 54488), (392, 51013), (556, 35966), (734, 27244), (973, 20552), (1112, 17983), (1468, 13622), (1946, 10276), (2569, 7784), (2936, 6811), (3892, 5138)]