19139988

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 53229792

約数和(自身を除く): 34089804

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 757, 903, 1204, 1514, 1806, 2107, 2271, 3028, 3612, 4214, 4542, 5299, 6321, 8428, 9084, 10598, 12642, 15897, 21196, 25284, 31794, 32551, 37093, 63588, 65102, 74186, 97653, 111279, 130204, 148372, 195306, 222558, 227857, 390612, 445116, 455714, 683571, 911428, 1367142, 1594999, 2734284, 3189998, 4784997, 6379996, 9569994, 19139988]

約数ペア:

[(1, 19139988), (2, 9569994), (3, 6379996), (4, 4784997), (6, 3189998), (7, 2734284), (12, 1594999), (14, 1367142), (21, 911428), (28, 683571), (42, 455714), (43, 445116), (49, 390612), (84, 227857), (86, 222558), (98, 195306), (129, 148372), (147, 130204), (172, 111279), (196, 97653), (258, 74186), (294, 65102), (301, 63588), (516, 37093), (588, 32551), (602, 31794), (757, 25284), (903, 21196), (1204, 15897), (1514, 12642), (1806, 10598), (2107, 9084), (2271, 8428), (3028, 6321), (3612, 5299), (4214, 4542)]