21331456

素因数分解:

$2^9\times {\mathrm{61}}^1\times {\mathrm{683}}^1$

素因数の和:762

約数の個数: 40

約数和(自身を含む): 43383384

約数和(自身を除く): 22051928

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 256, 488, 512, 683, 976, 1366, 1952, 2732, 3904, 5464, 7808, 10928, 15616, 21856, 31232, 41663, 43712, 83326, 87424, 166652, 174848, 333304, 349696, 666608, 1333216, 2666432, 5332864, 10665728, 21331456]

約数ペア:

[(1, 21331456), (2, 10665728), (4, 5332864), (8, 2666432), (16, 1333216), (32, 666608), (61, 349696), (64, 333304), (122, 174848), (128, 166652), (244, 87424), (256, 83326), (488, 43712), (512, 41663), (683, 31232), (976, 21856), (1366, 15616), (1952, 10928), (2732, 7808), (3904, 5464)]