18940928

素因数分解:

$2^{10}\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:422

約数の個数: 44

約数和(自身を含む): 38688300

約数和(自身を除く): 19747372

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 212, 256, 349, 424, 512, 698, 848, 1024, 1396, 1696, 2792, 3392, 5584, 6784, 11168, 13568, 18497, 22336, 27136, 36994, 44672, 54272, 73988, 89344, 147976, 178688, 295952, 357376, 591904, 1183808, 2367616, 4735232, 9470464, 18940928]

約数ペア:

[(1, 18940928), (2, 9470464), (4, 4735232), (8, 2367616), (16, 1183808), (32, 591904), (53, 357376), (64, 295952), (106, 178688), (128, 147976), (212, 89344), (256, 73988), (349, 54272), (424, 44672), (512, 36994), (698, 27136), (848, 22336), (1024, 18497), (1396, 13568), (1696, 11168), (2792, 6784), (3392, 5584)]