18811456

素因数分解:

$2^6\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 56

約数和(自身を含む): 39172896

約数和(自身を除く): 20361440

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 67, 82, 107, 134, 164, 214, 268, 328, 428, 536, 656, 856, 1072, 1312, 1712, 2144, 2624, 2747, 3424, 4288, 4387, 5494, 6848, 7169, 8774, 10988, 14338, 17548, 21976, 28676, 35096, 43952, 57352, 70192, 87904, 114704, 140384, 175808, 229408, 280768, 293929, 458816, 587858, 1175716, 2351432, 4702864, 9405728, 18811456]

約数ペア:

[(1, 18811456), (2, 9405728), (4, 4702864), (8, 2351432), (16, 1175716), (32, 587858), (41, 458816), (64, 293929), (67, 280768), (82, 229408), (107, 175808), (134, 140384), (164, 114704), (214, 87904), (268, 70192), (328, 57352), (428, 43952), (536, 35096), (656, 28676), (856, 21976), (1072, 17548), (1312, 14338), (1712, 10988), (2144, 8774), (2624, 7169), (2747, 6848), (3424, 5494), (4288, 4387)]