381440

素因数分解:

$2^9\times 5^1\times {\mathrm{149}}^1$

素因数の和:172

約数の個数: 40

約数和(自身を含む): 920700

約数和(自身を除く): 539260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 256, 298, 320, 512, 596, 640, 745, 1192, 1280, 1490, 2384, 2560, 2980, 4768, 5960, 9536, 11920, 19072, 23840, 38144, 47680, 76288, 95360, 190720, 381440]

約数ペア:

[(1, 381440), (2, 190720), (4, 95360), (5, 76288), (8, 47680), (10, 38144), (16, 23840), (20, 19072), (32, 11920), (40, 9536), (64, 5960), (80, 4768), (128, 2980), (149, 2560), (160, 2384), (256, 1490), (298, 1280), (320, 1192), (512, 745), (596, 640)]