19664384

素因数分解:

$2^9\times {\mathrm{193}}^1\times {\mathrm{199}}^1$

素因数の和:410

約数の個数: 40

約数和(自身を含む): 39692400

約数和(自身を除く): 20028016

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 193, 199, 256, 386, 398, 512, 772, 796, 1544, 1592, 3088, 3184, 6176, 6368, 12352, 12736, 24704, 25472, 38407, 49408, 50944, 76814, 98816, 101888, 153628, 307256, 614512, 1229024, 2458048, 4916096, 9832192, 19664384]

約数ペア:

[(1, 19664384), (2, 9832192), (4, 4916096), (8, 2458048), (16, 1229024), (32, 614512), (64, 307256), (128, 153628), (193, 101888), (199, 98816), (256, 76814), (386, 50944), (398, 49408), (512, 38407), (772, 25472), (796, 24704), (1544, 12736), (1592, 12352), (3088, 6368), (3184, 6176)]