21389512

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 41328000

約数和(自身を除く): 19938488

約数列:

[1, 2, 4, 8, 47, 94, 163, 188, 326, 349, 376, 652, 698, 1304, 1396, 2792, 7661, 15322, 16403, 30644, 32806, 56887, 61288, 65612, 113774, 131224, 227548, 455096, 2673689, 5347378, 10694756, 21389512]

約数ペア:

[(1, 21389512), (2, 10694756), (4, 5347378), (8, 2673689), (47, 455096), (94, 227548), (163, 131224), (188, 113774), (326, 65612), (349, 61288), (376, 56887), (652, 32806), (698, 30644), (1304, 16403), (1396, 15322), (2792, 7661)]