19456857

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 34998912

約数和(自身を除く): 15542055

約数列:

[1, 3, 7, 9, 17, 21, 37, 51, 63, 111, 119, 153, 259, 333, 357, 491, 629, 777, 1071, 1473, 1887, 2331, 3437, 4403, 4419, 5661, 8347, 10311, 13209, 18167, 25041, 30933, 39627, 54501, 58429, 75123, 127169, 163503, 175287, 308839, 381507, 525861, 926517, 1144521, 2161873, 2779551, 6485619, 19456857]

約数ペア:

[(1, 19456857), (3, 6485619), (7, 2779551), (9, 2161873), (17, 1144521), (21, 926517), (37, 525861), (51, 381507), (63, 308839), (111, 175287), (119, 163503), (153, 127169), (259, 75123), (333, 58429), (357, 54501), (491, 39627), (629, 30933), (777, 25041), (1071, 18167), (1473, 13209), (1887, 10311), (2331, 8347), (3437, 5661), (4403, 4419)]