21784064

素因数分解:

$2^9\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:446

約数の個数: 40

約数和(自身を含む): 43964448

約数和(自身を除く): 22180384

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 256, 271, 314, 512, 542, 628, 1084, 1256, 2168, 2512, 4336, 5024, 8672, 10048, 17344, 20096, 34688, 40192, 42547, 69376, 80384, 85094, 138752, 170188, 340376, 680752, 1361504, 2723008, 5446016, 10892032, 21784064]

約数ペア:

[(1, 21784064), (2, 10892032), (4, 5446016), (8, 2723008), (16, 1361504), (32, 680752), (64, 340376), (128, 170188), (157, 138752), (256, 85094), (271, 80384), (314, 69376), (512, 42547), (542, 40192), (628, 34688), (1084, 20096), (1256, 17344), (2168, 10048), (2512, 8672), (4336, 5024)]