389310488

素因数分解:

$2^3\times 7^3\times {\mathrm{337}}^1\times {\mathrm{421}}^1$

素因数の和:785

約数の個数: 64

約数和(自身を含む): 855816000

約数和(自身を除く): 466505512

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 337, 343, 392, 421, 674, 686, 842, 1348, 1372, 1684, 2359, 2696, 2744, 2947, 3368, 4718, 5894, 9436, 11788, 16513, 18872, 20629, 23576, 33026, 41258, 66052, 82516, 115591, 132104, 141877, 144403, 165032, 231182, 283754, 288806, 462364, 567508, 577612, 924728, 993139, 1135016, 1155224, 1986278, 3972556, 6951973, 7945112, 13903946, 27807892, 48663811, 55615784, 97327622, 194655244, 389310488]

約数ペア:

[(1, 389310488), (2, 194655244), (4, 97327622), (7, 55615784), (8, 48663811), (14, 27807892), (28, 13903946), (49, 7945112), (56, 6951973), (98, 3972556), (196, 1986278), (337, 1155224), (343, 1135016), (392, 993139), (421, 924728), (674, 577612), (686, 567508), (842, 462364), (1348, 288806), (1372, 283754), (1684, 231182), (2359, 165032), (2696, 144403), (2744, 141877), (2947, 132104), (3368, 115591), (4718, 82516), (5894, 66052), (9436, 41258), (11788, 33026), (16513, 23576), (18872, 20629)]