20207104

素因数分解:

$2^9\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 40

約数和(自身を含む): 41100048

約数和(自身を除く): 20892944

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 256, 488, 512, 647, 976, 1294, 1952, 2588, 3904, 5176, 7808, 10352, 15616, 20704, 31232, 39467, 41408, 78934, 82816, 157868, 165632, 315736, 331264, 631472, 1262944, 2525888, 5051776, 10103552, 20207104]

約数ペア:

[(1, 20207104), (2, 10103552), (4, 5051776), (8, 2525888), (16, 1262944), (32, 631472), (61, 331264), (64, 315736), (122, 165632), (128, 157868), (244, 82816), (256, 78934), (488, 41408), (512, 39467), (647, 31232), (976, 20704), (1294, 15616), (1952, 10352), (2588, 7808), (3904, 5176)]