19947008

素因数分解:

$2^9\times {\mathrm{38959}}^1$

素因数の和:38977

約数の個数: 20

約数和(自身を含む): 39856080

約数和(自身を除く): 19909072

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 38959, 77918, 155836, 311672, 623344, 1246688, 2493376, 4986752, 9973504, 19947008]

約数ペア:

[(1, 19947008), (2, 9973504), (4, 4986752), (8, 2493376), (16, 1246688), (32, 623344), (64, 311672), (128, 155836), (256, 77918), (512, 38959)]